212568664 has 48 divisors (see below), whose sum is σ = 505797480. Its totient is φ = 82817280.

The previous prime is 212568647. The next prime is 212568679. The reversal of 212568664 is 466865212.

It is a super-3 number, since 3×212568664³ (a number of 26 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 20337 + ... + 28960.

Almost surely, 2^212568664 is an apocalyptic number.

It is an amenable number.

212568664 is an abundant number, since it is smaller than the sum of its proper divisors (293228816).

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

212568664 is a wasteful number, since it uses less digits than its factorization.

212568664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49328 (or 49317 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 212568664 is about 14579.7347026618. The cubic root of 212568664 is about 596.8058630263.

The spelling of 212568664 in words is "two hundred twelve million, five hundred sixty-eight thousand, six hundred sixty-four".