212690768 has 20 divisors (see below), whose sum is σ = 413628660. Its totient is φ = 105947904.

The previous prime is 212690759. The next prime is 212690773. The reversal of 212690768 is 867096212.

212690768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110923024 + 101767744 = 10532^2 + 10088^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20405 + ... + 29012.

It is an arithmetic number, because the mean of its divisors is an integer number (20681433).

Almost surely, 2^212690768 is an apocalyptic number.

It is an amenable number.

212690768 is a deficient number, since it is larger than the sum of its proper divisors (200937892).

212690768 is a wasteful number, since it uses less digits than its factorization.

212690768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49694 (or 49688 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 212690768 is about 14583.9215576607. The cubic root of 212690768 is about 596.9201138493.

The spelling of 212690768 in words is "two hundred twelve million, six hundred ninety thousand, seven hundred sixty-eight".