64866404 has 12 divisors (see below), whose sum is σ = 114792300. Its totient is φ = 32068608.

The previous prime is 64866397. The next prime is 64866419. The reversal of 64866404 is 40466846.

It can be written as a sum of positive squares in 2 ways, for example, as 10549504 + 54316900 = 3248^2 + 7370^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90749 + ... + 91460.

It is an arithmetic number, because the mean of its divisors is an integer number (9566025).

Almost surely, 2^64866404 is an apocalyptic number.

It is an amenable number.

64866404 is a deficient number, since it is larger than the sum of its proper divisors (49925896).

64866404 is a wasteful number, since it uses less digits than its factorization.

64866404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182302 (or 182300 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 64866404 is about 8053.9682144891. The cubic root of 64866404 is about 401.7969239067.

The spelling of 64866404 in words is "sixty-four million, eight hundred sixty-six thousand, four hundred four".