213889684 has 12 divisors (see below), whose sum is σ = 375054624. Its totient is φ = 106731224.

The previous prime is 213889667. The next prime is 213889721. The reversal of 213889684 is 486988312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51142 + ... + 55165.

It is an arithmetic number, because the mean of its divisors is an integer number (31254552).

Almost surely, 2^213889684 is an apocalyptic number.

It is an amenable number.

213889684 is a deficient number, since it is larger than the sum of its proper divisors (161164940).

213889684 is a wasteful number, since it uses less digits than its factorization.

213889684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106814 (or 106812 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 213889684 is about 14624.9678290244. The cubic root of 213889684 is about 598.0396054350.

The spelling of 213889684 in words is "two hundred thirteen million, eight hundred eighty-nine thousand, six hundred eighty-four".