55664307 has 32 divisors (see below), whose sum is σ = 87946560. Its totient is φ = 34675200.

The previous prime is 55664303. The next prime is 55664321. The reversal of 55664307 is 70346655.

55664307 is a `hidden beast` number, since 5 + 5 + 6 + 643 + 0 + 7 = 666.

It is not a de Polignac number, because 55664307 - 2² = 55664303 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (55664303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79057 + ... + 79757.

It is an arithmetic number, because the mean of its divisors is an integer number (2748330).

Almost surely, 2^55664307 is an apocalyptic number.

55664307 is a deficient number, since it is larger than the sum of its proper divisors (32282253).

55664307 is a wasteful number, since it uses less digits than its factorization.

55664307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 55664307 is about 7460.8516269927. The cubic root of 55664307 is about 381.8202305549.

The spelling of 55664307 in words is "fifty-five million, six hundred sixty-four thousand, three hundred seven".