212719664 has 20 divisors (see below), whose sum is σ = 417792456. Its totient is φ = 104902272.

The previous prime is 212719651. The next prime is 212719679. The reversal of 212719664 is 466917212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89894 + ... + 92229.

Almost surely, 2^212719664 is an apocalyptic number.

It is an amenable number.

212719664 is a deficient number, since it is larger than the sum of its proper divisors (205072792).

212719664 is a wasteful number, since it uses less digits than its factorization.

212719664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182204 (or 182198 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 212719664 is about 14584.9122040553. The cubic root of 212719664 is about 596.9471449905.

The spelling of 212719664 in words is "two hundred twelve million, seven hundred nineteen thousand, six hundred sixty-four".