213585805 has 16 divisors (see below), whose sum is σ = 258663744. Its totient is φ = 169303680.

The previous prime is 213585767. The next prime is 213585839. The reversal of 213585805 is 508585312.

It is not a de Polignac number, because 213585805 - 2⁷ = 213585677 is a prime.

It is a Duffinian number.

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, 467137 + ... + 467593.

It is an arithmetic number, because the mean of its divisors is an integer number (16166484).

Almost surely, 2^213585805 is an apocalyptic number.

It is an amenable number.

213585805 is a deficient number, since it is larger than the sum of its proper divisors (45077939).

213585805 is a wasteful number, since it uses less digits than its factorization.

213585805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 213585805 is about 14614.5750879045. The cubic root of 213585805 is about 597.7562540587.

The spelling of 213585805 in words is "two hundred thirteen million, five hundred eighty-five thousand, eight hundred five".