213456164 has 6 divisors (see below), whose sum is σ = 373548294. Its totient is φ = 106728080.

The previous prime is 213456151. The next prime is 213456239. The reversal of 213456164 is 461654312.

It can be written as a sum of positive squares in only one way, i.e., 213393664 + 62500 = 14608^2 + 250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213456164.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26682017 + ... + 26682024.

It is an arithmetic number, because the mean of its divisors is an integer number (62258049).

Almost surely, 2^213456164 is an apocalyptic number.

It is an amenable number.

213456164 is a deficient number, since it is larger than the sum of its proper divisors (160092130).

213456164 is a wasteful number, since it uses less digits than its factorization.

213456164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53364045 (or 53364043 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 213456164 is about 14610.1390821580. The cubic root of 213456164 is about 597.6352887746.

The spelling of 213456164 in words is "two hundred thirteen million, four hundred fifty-six thousand, one hundred sixty-four".