53690638 has 16 divisors (see below), whose sum is σ = 82669824. Its totient is φ = 26139960.

The previous prime is 53690627. The next prime is 53690753. The reversal of 53690638 is 83609635.

It is a self number, because there is not a number n which added to its sum of digits gives 53690638.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18481 + ... + 21187.

It is an arithmetic number, because the mean of its divisors is an integer number (5166864).

Almost surely, 2^53690638 is an apocalyptic number.

53690638 is a deficient number, since it is larger than the sum of its proper divisors (28979186).

53690638 is a wasteful number, since it uses less digits than its factorization.

53690638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 53690638 is about 7327.3895761042. The cubic root of 53690638 is about 377.2531327494.

The spelling of 53690638 in words is "fifty-three million, six hundred ninety thousand, six hundred thirty-eight".