213064564 has 24 divisors (see below), whose sum is σ = 377552448. Its totient is φ = 105198720.

The previous prime is 213064561. The next prime is 213064567. The reversal of 213064564 is 465460312.

It is an interprime number because it is at equal distance from previous prime (213064561) and next prime (213064567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213064561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241404 + ... + 242284.

It is an arithmetic number, because the mean of its divisors is an integer number (15731352).

Almost surely, 2^213064564 is an apocalyptic number.

It is an amenable number.

213064564 is a deficient number, since it is larger than the sum of its proper divisors (164487884).

213064564 is a wasteful number, since it uses less digits than its factorization.

213064564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 213064564 is about 14596.7312779266. The cubic root of 213064564 is about 597.2695973873.

The spelling of 213064564 in words is "two hundred thirteen million, sixty-four thousand, five hundred sixty-four".