213632805 has 16 divisors (see below), whose sum is σ = 347607360. Its totient is φ = 112005888.

The previous prime is 213632791. The next prime is 213632833. The reversal of 213632805 is 508236312.

It is not a de Polignac number, because 213632805 - 2¹³ = 213624613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119812 + ... + 121581.

It is an arithmetic number, because the mean of its divisors is an integer number (21725460).

Almost surely, 2^213632805 is an apocalyptic number.

It is an amenable number.

213632805 is a deficient number, since it is larger than the sum of its proper divisors (133974555).

213632805 is a wasteful number, since it uses less digits than its factorization.

213632805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241460.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 213632805 is about 14616.1829832552. The cubic root of 213632805 is about 597.8000966780.

The spelling of 213632805 in words is "two hundred thirteen million, six hundred thirty-two thousand, eight hundred five".