164780860 has 24 divisors (see below), whose sum is σ = 348571440. Its totient is φ = 65430144.

The previous prime is 164780851. The next prime is 164780867. The reversal of 164780860 is 68087461.

164780860 = 1028² + 1029² + ... + 1164².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164780867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27330 + ... + 32809.

It is an arithmetic number, because the mean of its divisors is an integer number (14523810).

Almost surely, 2^164780860 is an apocalyptic number.

164780860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164780860 is an abundant number, since it is smaller than the sum of its proper divisors (183790580).

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

164780860 is a wasteful number, since it uses less digits than its factorization.

164780860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60285 (or 60283 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 164780860 is about 12836.6997316288. The cubic root of 164780860 is about 548.2377314032.

The spelling of 164780860 in words is "one hundred sixty-four million, seven hundred eighty thousand, eight hundred sixty".