64656361 has 8 divisors (see below), whose sum is σ = 80610624. Its totient is φ = 50381520.

The previous prime is 64656337. The next prime is 64656377. The reversal of 64656361 is 16365646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64656361 - 2⁷ = 64656233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64656361.

It is not an unprimeable number, because it can be changed into a prime (64656311) 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, 419770 + ... + 419923.

It is an arithmetic number, because the mean of its divisors is an integer number (10076328).

Almost surely, 2^64656361 is an apocalyptic number.

It is an amenable number.

64656361 is a deficient number, since it is larger than the sum of its proper divisors (15954263).

64656361 is a wasteful number, since it uses less digits than its factorization.

64656361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839711.

The product of its digits is 77760, while the sum is 37.

The square root of 64656361 is about 8040.9179202377. The cubic root of 64656361 is about 401.3627706180.

The spelling of 64656361 in words is "sixty-four million, six hundred fifty-six thousand, three hundred sixty-one".