863630812 has 24 divisors (see below), whose sum is σ = 1664167680. Its totient is φ = 388888560.

The previous prime is 863630809. The next prime is 863630819. The reversal of 863630812 is 218036368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863630819) 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, 87012 + ... + 96427.

It is an arithmetic number, because the mean of its divisors is an integer number (69340320).

Almost surely, 2^863630812 is an apocalyptic number.

It is an amenable number.

863630812 is a deficient number, since it is larger than the sum of its proper divisors (800536868).

863630812 is a wasteful number, since it uses less digits than its factorization.

863630812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183561 (or 183559 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 863630812 is about 29387.5962269798. The cubic root of 863630812 is about 952.3049522660.

The spelling of 863630812 in words is "eight hundred sixty-three million, six hundred thirty thousand, eight hundred twelve".