53646664 has 16 divisors (see below), whose sum is σ = 101041920. Its totient is φ = 26702160.

The previous prime is 53646661. The next prime is 53646673. The reversal of 53646664 is 46664635.

It is not an unprimeable number, because it can be changed into a prime (53646661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13252 + ... + 16819.

It is an arithmetic number, because the mean of its divisors is an integer number (6315120).

Almost surely, 2^53646664 is an apocalyptic number.

It is an amenable number.

53646664 is a deficient number, since it is larger than the sum of its proper divisors (47395256).

53646664 is a wasteful number, since it uses less digits than its factorization.

53646664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30300 (or 30296 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 53646664 is about 7324.3883021041. The cubic root of 53646664 is about 377.1501113105.

The spelling of 53646664 in words is "fifty-three million, six hundred forty-six thousand, six hundred sixty-four".