64408575 has 96 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 25315200.

The previous prime is 64408571. The next prime is 64408577. The reversal of 64408575 is 57580446.

It is not a de Polignac number, because 64408575 - 2² = 64408571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64408571) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109432 + ... + 110018.

It is an arithmetic number, because the mean of its divisors is an integer number (1458240).

Almost surely, 2^64408575 is an apocalyptic number.

64408575 is an abundant number, since it is smaller than the sum of its proper divisors (75582465).

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

64408575 is a wasteful number, since it uses less digits than its factorization.

64408575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 64408575 is about 8025.4953118172. The cubic root of 64408575 is about 400.8493929689.

The spelling of 64408575 in words is "sixty-four million, four hundred eight thousand, five hundred seventy-five".