64878092 has 6 divisors (see below), whose sum is σ = 113536668. Its totient is φ = 32439044.

The previous prime is 64878091. The next prime is 64878097. The reversal of 64878092 is 29087846.

It is not an unprimeable number, because it can be changed into a prime (64878091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8109758 + ... + 8109765.

It is an arithmetic number, because the mean of its divisors is an integer number (18922778).

Almost surely, 2^64878092 is an apocalyptic number.

It is an amenable number.

64878092 is a deficient number, since it is larger than the sum of its proper divisors (48658576).

64878092 is a wasteful number, since it uses less digits than its factorization.

64878092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16219527 (or 16219525 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 64878092 is about 8054.6937868550. The cubic root of 64878092 is about 401.8210551473.

The spelling of 64878092 in words is "sixty-four million, eight hundred seventy-eight thousand, ninety-two".