64505896 has 32 divisors (see below), whose sum is σ = 148861440. Its totient is φ = 25518528.

The previous prime is 64505879. The next prime is 64505897. The reversal of 64505896 is 69850546.

It is a super-2 number, since 2×64505896² = 8322021237525632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64505897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43576 + ... + 45031.

It is an arithmetic number, because the mean of its divisors is an integer number (4651920).

Almost surely, 2^64505896 is an apocalyptic number.

It is an amenable number.

64505896 is an abundant number, since it is smaller than the sum of its proper divisors (84355544).

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

64505896 is a wasteful number, since it uses less digits than its factorization.

64505896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88633 (or 88629 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 64505896 is about 8031.5562626430. The cubic root of 64505896 is about 401.0511851048.

The spelling of 64505896 in words is "sixty-four million, five hundred five thousand, eight hundred ninety-six".