64790172 has 48 divisors (see below), whose sum is σ = 175284480. Its totient is φ = 20656944.

The previous prime is 64790161. The next prime is 64790227. The reversal of 64790172 is 27109746.

It is a happy number.

64790172 is a `hidden beast` number, since 647 + 9 + 0 + 1 + 7 + 2 = 666.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10558 + ... + 15525.

It is an arithmetic number, because the mean of its divisors is an integer number (3651760).

Almost surely, 2^64790172 is an apocalyptic number.

It is an amenable number.

64790172 is an abundant number, since it is smaller than the sum of its proper divisors (110494308).

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

64790172 is a wasteful number, since it uses less digits than its factorization.

64790172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26119 (or 26111 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 64790172 is about 8049.2342492935. The cubic root of 64790172 is about 401.6394628898.

The spelling of 64790172 in words is "sixty-four million, seven hundred ninety thousand, one hundred seventy-two".