64811408 has 20 divisors (see below), whose sum is σ = 126347568. Its totient is φ = 32205600.

The previous prime is 64811399. The next prime is 64811431. The reversal of 64811408 is 80411846.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 9818 + ... + 15033.

Almost surely, 2^64811408 is an apocalyptic number.

It is an amenable number.

64811408 is a deficient number, since it is larger than the sum of its proper divisors (61536160).

64811408 is a wasteful number, since it uses less digits than its factorization.

64811408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25022 (or 25016 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 64811408 is about 8050.5532729124. The cubic root of 64811408 is about 401.6833393178.

The spelling of 64811408 in words is "sixty-four million, eight hundred eleven thousand, four hundred eight".