64409496 has 32 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 21166880.

The previous prime is 64409491. The next prime is 64409507. The reversal of 64409496 is 69490446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64409491) 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, 17196 + ... + 20603.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^64409496 is an apocalyptic number.

It is an amenable number.

64409496 is an abundant number, since it is smaller than the sum of its proper divisors (98886504).

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

64409496 is a wasteful number, since it uses less digits than its factorization.

64409496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37879 (or 37875 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 64409496 is about 8025.5526912481. The cubic root of 64409496 is about 400.8513035869.

The spelling of 64409496 in words is "sixty-four million, four hundred nine thousand, four hundred ninety-six".