863626344 has 32 divisors (see below), whose sum is σ = 2467504320. Its totient is φ = 246750336.

The previous prime is 863626339. The next prime is 863626373. The reversal of 863626344 is 443626368.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 863626296 and 863626305.

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, 2570149 + ... + 2570484.

It is an arithmetic number, because the mean of its divisors is an integer number (77109510).

Almost surely, 2^863626344 is an apocalyptic number.

863626344 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

863626344 is an abundant number, since it is smaller than the sum of its proper divisors (1603877976).

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

863626344 is a wasteful number, since it uses less digits than its factorization.

863626344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140649 (or 5140645 counting only the distinct ones).

The product of its digits is 497664, while the sum is 42.

The square root of 863626344 is about 29387.5202084150. The cubic root of 863626344 is about 952.3033100111.

It can be divided in two parts, 8636 and 26344, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 863626344 in words is "eight hundred sixty-three million, six hundred twenty-six thousand, three hundred forty-four".