213279564 has 12 divisors (see below), whose sum is σ = 497652344. Its totient is φ = 71093184.

The previous prime is 213279557. The next prime is 213279571. The reversal of 213279564 is 465972312.

213279564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213279557) and next prime (213279571).

It is a tau number, because it is divible by the number of its divisors (12).

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, 8886637 + ... + 8886660.

Almost surely, 2^213279564 is an apocalyptic number.

It is an amenable number.

213279564 is an abundant number, since it is smaller than the sum of its proper divisors (284372780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213279564 is a wasteful number, since it uses less digits than its factorization.

213279564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17773304 (or 17773302 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 213279564 is about 14604.0940835096. The cubic root of 213279564 is about 597.4704282091.

The spelling of 213279564 in words is "two hundred thirteen million, two hundred seventy-nine thousand, five hundred sixty-four".