64929375 has 120 divisors (see below), whose sum is σ = 143279136. Its totient is φ = 27648000.

The previous prime is 64929373. The next prime is 64929379. The reversal of 64929375 is 57392946.

It is a happy number.

64929375 is a `hidden beast` number, since 6 + 492 + 93 + 75 = 666.

It is not a de Polignac number, because 64929375 - 2¹ = 64929373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64929375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64929373) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 669327 + ... + 669423.

Almost surely, 2^64929375 is an apocalyptic number.

64929375 is an abundant number, since it is smaller than the sum of its proper divisors (78349761).

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

64929375 is a wasteful number, since it uses less digits than its factorization.

64929375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 129 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 64929375 is about 8057.8765813333. The cubic root of 64929375 is about 401.9269006463.

The spelling of 64929375 in words is "sixty-four million, nine hundred twenty-nine thousand, three hundred seventy-five".