662172480 has 168 divisors, whose sum is σ = 2331000672. Its totient is φ = 172440576.

The previous prime is 662172473. The next prime is 662172481. The reversal of 662172480 is 84271266.

662172480 is a `hidden beast` number, since 6 + 6 + 2 + 172 + 480 = 666.

662172480 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662172481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121167 + ... + 126513.

It is an arithmetic number, because the mean of its divisors is an integer number (13875004).

Almost surely, 2^662172480 is an apocalyptic number.

662172480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662172480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1165500336).

662172480 is an abundant number, since it is smaller than the sum of its proper divisors (1668828192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662172480 is a wasteful number, since it uses less digits than its factorization.

662172480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413 (or 5400 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 662172480 is about 25732.7122550267. The cubic root of 662172480 is about 871.6130202210.

The spelling of 662172480 in words is "six hundred sixty-two million, one hundred seventy-two thousand, four hundred eighty".