216020764 has 12 divisors (see below), whose sum is σ = 384234088. Its totient is φ = 106239600.

The previous prime is 216020743. The next prime is 216020773. The reversal of 216020764 is 467020612.

It is a congruent number.

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, 442422 + ... + 442909.

Almost surely, 2^216020764 is an apocalyptic number.

It is an amenable number.

216020764 is a deficient number, since it is larger than the sum of its proper divisors (168213324).

216020764 is a wasteful number, since it uses less digits than its factorization.

216020764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885396 (or 885394 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 216020764 is about 14697.6448453485. The cubic root of 216020764 is about 600.0192253099.

The spelling of 216020764 in words is "two hundred sixteen million, twenty thousand, seven hundred sixty-four".