212797668 has 24 divisors (see below), whose sum is σ = 497150080. Its totient is φ = 70843680.

The previous prime is 212797657. The next prime is 212797699. The reversal of 212797668 is 866797212.

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 7 ways as a sum of consecutive naturals, for example, 748 + ... + 20643.

Almost surely, 2^212797668 is an apocalyptic number.

It is an amenable number.

212797668 is an abundant number, since it is smaller than the sum of its proper divisors (284352412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212797668 is a wasteful number, since it uses less digits than its factorization.

212797668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22227 (or 22225 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 212797668 is about 14587.5860922909. The cubic root of 212797668 is about 597.0201026314.

The spelling of 212797668 in words is "two hundred twelve million, seven hundred ninety-seven thousand, six hundred sixty-eight".