865672812 has 24 divisors (see below), whose sum is σ = 2244337200. Its totient is φ = 288557568.

The previous prime is 865672783. The next prime is 865672817. The reversal of 865672812 is 218276568.

865672812 is a `hidden beast` number, since 8 + 6 + 567 + 2 + 81 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (865672817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4007637 + ... + 4007852.

It is an arithmetic number, because the mean of its divisors is an integer number (93514050).

Almost surely, 2^865672812 is an apocalyptic number.

It is an amenable number.

865672812 is an abundant number, since it is smaller than the sum of its proper divisors (1378664388).

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

865672812 is a wasteful number, since it uses less digits than its factorization.

865672812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015502 (or 8015494 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 865672812 is about 29422.3182635223. The cubic root of 865672812 is about 953.0549162794.

The spelling of 865672812 in words is "eight hundred sixty-five million, six hundred seventy-two thousand, eight hundred twelve".