212494866 has 16 divisors (see below), whose sum is σ = 449989344. Its totient is φ = 66665024.

The previous prime is 212494859. The next prime is 212494873. The reversal of 212494866 is 668494212.

It is an interprime number because it is at equal distance from previous prime (212494859) and next prime (212494873).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041540 + ... + 1041743.

It is an arithmetic number, because the mean of its divisors is an integer number (28124334).

Almost surely, 2^212494866 is an apocalyptic number.

212494866 is an abundant number, since it is smaller than the sum of its proper divisors (237494478).

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

212494866 is a wasteful number, since it uses less digits than its factorization.

212494866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083305.

The product of its digits is 165888, while the sum is 42.

The square root of 212494866 is about 14577.2036413024. The cubic root of 212494866 is about 596.7367901660.

The spelling of 212494866 in words is "two hundred twelve million, four hundred ninety-four thousand, eight hundred sixty-six".