64097172 has 36 divisors (see below), whose sum is σ = 166405876. Its totient is φ = 20787840.

The previous prime is 64097161. The next prime is 64097179. The reversal of 64097172 is 27179046.

It is a happy number.

64097172 is a `hidden beast` number, since 640 + 9 + 7 + 1 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52359696 + 11737476 = 7236^2 + 3426^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64097179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22729 + ... + 25392.

Almost surely, 2^64097172 is an apocalyptic number.

It is an amenable number.

64097172 is an abundant number, since it is smaller than the sum of its proper divisors (102308704).

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

64097172 is a wasteful number, since it uses less digits than its factorization.

64097172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48168 (or 48163 counting only the distinct ones).

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

The square root of 64097172 is about 8006.0709464756. The cubic root of 64097172 is about 400.2023392964.

The spelling of 64097172 in words is "sixty-four million, ninety-seven thousand, one hundred seventy-two".