213582164 has 6 divisors (see below), whose sum is σ = 373768794. Its totient is φ = 106791080.

The previous prime is 213582151. The next prime is 213582179. The reversal of 213582164 is 461285312.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 18421264 = 13970^2 + 4292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213582164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26697767 + ... + 26697774.

It is an arithmetic number, because the mean of its divisors is an integer number (62294799).

Almost surely, 2^213582164 is an apocalyptic number.

It is an amenable number.

213582164 is a deficient number, since it is larger than the sum of its proper divisors (160186630).

213582164 is a wasteful number, since it uses less digits than its factorization.

213582164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53395545 (or 53395543 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 213582164 is about 14614.4505199477. The cubic root of 213582164 is about 597.7528573865.

The spelling of 213582164 in words is "two hundred thirteen million, five hundred eighty-two thousand, one hundred sixty-four".