860638212 has 72 divisors (see below), whose sum is σ = 2617160000. Its totient is φ = 232953408.

The previous prime is 860638211. The next prime is 860638237. The reversal of 860638212 is 212836068.

860638212 is a `hidden beast` number, since 8 + 6 + 0 + 638 + 2 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (860638211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85087 + ... + 94662.

Almost surely, 2^860638212 is an apocalyptic number.

It is an amenable number.

860638212 is an abundant number, since it is smaller than the sum of its proper divisors (1756521788).

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

860638212 is a wasteful number, since it uses less digits than its factorization.

860638212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179785 (or 179780 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 860638212 is about 29336.6360034684. The cubic root of 860638212 is about 951.2037232684.

The spelling of 860638212 in words is "eight hundred sixty million, six hundred thirty-eight thousand, two hundred twelve".