164775140 has 24 divisors (see below), whose sum is σ = 354076800. Its totient is φ = 64376928.

The previous prime is 164775109. The next prime is 164775157. The reversal of 164775140 is 41577461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 164775140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94940 + ... + 96659.

It is an arithmetic number, because the mean of its divisors is an integer number (14753200).

Almost surely, 2^164775140 is an apocalyptic number.

164775140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164775140 is an abundant number, since it is smaller than the sum of its proper divisors (189301660).

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

164775140 is a wasteful number, since it uses less digits than its factorization.

164775140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191651 (or 191649 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 164775140 is about 12836.4769309963. The cubic root of 164775140 is about 548.2313877131.

The spelling of 164775140 in words is "one hundred sixty-four million, seven hundred seventy-five thousand, one hundred forty".