213635564 has 6 divisors (see below), whose sum is σ = 373862244. Its totient is φ = 106817780.

The previous prime is 213635509. The next prime is 213635579. The reversal of 213635564 is 465536312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26704442 + ... + 26704449.

It is an arithmetic number, because the mean of its divisors is an integer number (62310374).

Almost surely, 2^213635564 is an apocalyptic number.

It is an amenable number.

213635564 is a deficient number, since it is larger than the sum of its proper divisors (160226680).

213635564 is a wasteful number, since it uses less digits than its factorization.

213635564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53408895 (or 53408893 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 213635564 is about 14616.2773646370. The cubic root of 213635564 is about 597.8026701332.

The spelling of 213635564 in words is "two hundred thirteen million, six hundred thirty-five thousand, five hundred sixty-four".