213284686 has 16 divisors (see below), whose sum is σ = 340511904. Its totient is φ = 99846144.

The previous prime is 213284663. The next prime is 213284693. The reversal of 213284686 is 686482312.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 9690 + ... + 22813.

It is an arithmetic number, because the mean of its divisors is an integer number (21281994).

Almost surely, 2^213284686 is an apocalyptic number.

213284686 is a deficient number, since it is larger than the sum of its proper divisors (127227218).

213284686 is a wasteful number, since it uses less digits than its factorization.

213284686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32715.

The product of its digits is 110592, while the sum is 40.

The square root of 213284686 is about 14604.2694442413. The cubic root of 213284686 is about 597.4752110068.

The spelling of 213284686 in words is "two hundred thirteen million, two hundred eighty-four thousand, six hundred eighty-six".