53664066 has 16 divisors (see below), whose sum is σ = 119253600. Its totient is φ = 17888004.

The previous prime is 53664059. The next prime is 53664067. The reversal of 53664066 is 66046635.

53664066 is a `hidden beast` number, since 5 + 3 + 6 + 640 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53664066.

It is not an unprimeable number, because it can be changed into a prime (53664067) 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, 496836 + ... + 496943.

It is an arithmetic number, because the mean of its divisors is an integer number (7453350).

Almost surely, 2^53664066 is an apocalyptic number.

53664066 is an abundant number, since it is smaller than the sum of its proper divisors (65589534).

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

53664066 is a wasteful number, since it uses less digits than its factorization.

53664066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993790 (or 993784 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 53664066 is about 7325.5761548154. The cubic root of 53664066 is about 377.1908871091.

The spelling of 53664066 in words is "fifty-three million, six hundred sixty-four thousand, sixty-six".