863649234 has 24 divisors (see below), whose sum is σ = 2138560320. Its totient is φ = 246756888.

The previous prime is 863649223. The next prime is 863649247. The reversal of 863649234 is 432946368.

863649234 is a `hidden beast` number, since 8 + 636 + 4 + 9 + 2 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 863649234.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3427054 + ... + 3427305.

It is an arithmetic number, because the mean of its divisors is an integer number (89106680).

Almost surely, 2^863649234 is an apocalyptic number.

863649234 is an abundant number, since it is smaller than the sum of its proper divisors (1274911086).

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

863649234 is a wasteful number, since it uses less digits than its factorization.

863649234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854374 (or 6854371 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 863649234 is about 29387.9096568640. The cubic root of 863649234 is about 952.3117233835.

The spelling of 863649234 in words is "eight hundred sixty-three million, six hundred forty-nine thousand, two hundred thirty-four".