64870512 has 60 divisors (see below), whose sum is σ = 194949576. Its totient is φ = 18533760.

The previous prime is 64870489. The next prime is 64870513. The reversal of 64870512 is 21507846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64870513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11439 + ... + 16142.

Almost surely, 2^64870512 is an apocalyptic number.

It is an amenable number.

64870512 is an abundant number, since it is smaller than the sum of its proper divisors (130079064).

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

64870512 is a wasteful number, since it uses less digits than its factorization.

64870512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27606 (or 27593 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 64870512 is about 8054.2232400151. The cubic root of 64870512 is about 401.8054056827.

The spelling of 64870512 in words is "sixty-four million, eight hundred seventy thousand, five hundred twelve".