64942812 has 36 divisors (see below), whose sum is σ = 179085816. Its totient is φ = 19679520.

The previous prime is 64942789. The next prime is 64942831. The reversal of 64942812 is 21824946.

64942812 is a `hidden beast` number, since 649 + 4 + 2 + 8 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81603 + ... + 82394.

It is an arithmetic number, because the mean of its divisors is an integer number (4974606).

Almost surely, 2^64942812 is an apocalyptic number.

It is an amenable number.

64942812 is an abundant number, since it is smaller than the sum of its proper divisors (114143004).

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

64942812 is a wasteful number, since it uses less digits than its factorization.

64942812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164018 (or 164013 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 64942812 is about 8058.7103186552. The cubic root of 64942812 is about 401.9546247144.

The spelling of 64942812 in words is "sixty-four million, nine hundred forty-two thousand, eight hundred twelve".