53664390 has 64 divisors (see below), whose sum is σ = 154123200. Its totient is φ = 13208832.

The previous prime is 53664349. The next prime is 53664409. The reversal of 53664390 is 9346635.

53664390 is a `hidden beast` number, since 5 + 3 + 6 + 643 + 9 + 0 = 666.

53664390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4135 + ... + 11154.

It is an arithmetic number, because the mean of its divisors is an integer number (2408175).

Almost surely, 2^53664390 is an apocalyptic number.

53664390 is an abundant number, since it is smaller than the sum of its proper divisors (100458810).

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

53664390 is a wasteful number, since it uses less digits than its factorization.

53664390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15318 (or 15312 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 53664390 is about 7325.5982690836. The cubic root of 53664390 is about 377.1916462117.

The spelling of 53664390 in words is "fifty-three million, six hundred sixty-four thousand, three hundred ninety".