64401896 has 32 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 29588160.

The previous prime is 64401893. The next prime is 64401901. The reversal of 64401896 is 69810446.

It is not an unprimeable number, because it can be changed into a prime (64401893) 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, 23561 + ... + 26151.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^64401896 is an apocalyptic number.

It is an amenable number.

64401896 is an abundant number, since it is smaller than the sum of its proper divisors (66234904).

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

64401896 is a wasteful number, since it uses less digits than its factorization.

64401896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 64401896 is about 8025.0791896404. The cubic root of 64401896 is about 400.8355368137.

The spelling of 64401896 in words is "sixty-four million, four hundred one thousand, eight hundred ninety-six".