64871812 has 12 divisors (see below), whose sum is σ = 115220560. Its totient is φ = 31951656.

The previous prime is 64871803. The next prime is 64871827. The reversal of 64871812 is 21817846.

It is a hoax number, since the sum of its digits (37) 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, 120762 + ... + 121297.

Almost surely, 2^64871812 is an apocalyptic number.

It is an amenable number.

64871812 is a deficient number, since it is larger than the sum of its proper divisors (50348748).

64871812 is a wasteful number, since it uses less digits than its factorization.

64871812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242130 (or 242128 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 64871812 is about 8054.3039426135. The cubic root of 64871812 is about 401.8080897144.

The spelling of 64871812 in words is "sixty-four million, eight hundred seventy-one thousand, eight hundred twelve".