162780660 has 288 divisors, whose sum is σ = 607606272. Its totient is φ = 34467840.

The previous prime is 162780643. The next prime is 162780677. The reversal of 162780660 is 66087261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (162780643) and next prime (162780677).

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

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1188112 + ... + 1188248.

It is an arithmetic number, because the mean of its divisors is an integer number (2109744).

Almost surely, 2^162780660 is an apocalyptic number.

162780660 is a gapful number since it is divisible by the number (10) 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 162780660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303803136).

162780660 is an abundant number, since it is smaller than the sum of its proper divisors (444825612).

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

162780660 is a wasteful number, since it uses less digits than its factorization.

162780660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 162780660 is about 12758.5524257260. The cubic root of 162780660 is about 546.0104252729.

The spelling of 162780660 in words is "one hundred sixty-two million, seven hundred eighty thousand, six hundred sixty".