662869872 has 320 divisors, whose sum is σ = 2333184000. Its totient is φ = 175986432.

The previous prime is 662869861. The next prime is 662869877. The reversal of 662869872 is 278968266.

662869872 is a `hidden beast` number, since 6 + 628 + 6 + 9 + 8 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662869877) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4768779 + ... + 4768917.

It is an arithmetic number, because the mean of its divisors is an integer number (7291200).

Almost surely, 2^662869872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662869872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166592000).

662869872 is an abundant number, since it is smaller than the sum of its proper divisors (1670314128).

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

662869872 is a wasteful number, since it uses less digits than its factorization.

662869872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 253 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 662869872 is about 25746.2593787913. The cubic root of 662869872 is about 871.9189036049.

The spelling of 662869872 in words is "six hundred sixty-two million, eight hundred sixty-nine thousand, eight hundred seventy-two".