64566906 has 16 divisors (see below), whose sum is σ = 129475584. Its totient is φ = 21465344.

The previous prime is 64566899. The next prime is 64566907. The reversal of 64566906 is 60966546.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64566907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11751 + ... + 16346.

It is an arithmetic number, because the mean of its divisors is an integer number (8092224).

Almost surely, 2^64566906 is an apocalyptic number.

64566906 is an abundant number, since it is smaller than the sum of its proper divisors (64908678).

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

64566906 is a wasteful number, since it uses less digits than its factorization.

64566906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28485.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 64566906 is about 8035.3535080916. The cubic root of 64566906 is about 401.1775840044.

The spelling of 64566906 in words is "sixty-four million, five hundred sixty-six thousand, nine hundred six".