687322244 has 12 divisors (see below), whose sum is σ = 1374644544. Its totient is φ = 294566664.

The previous prime is 687322213. The next prime is 687322261. The reversal of 687322244 is 442223786.

687322244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

687322244 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 687322198 and 687322207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12273584 + ... + 12273639.

It is an arithmetic number, because the mean of its divisors is an integer number (114553712).

Almost surely, 2^687322244 is an apocalyptic number.

It is an amenable number.

687322244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

687322244 is a wasteful number, since it uses less digits than its factorization.

687322244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24547234 (or 24547232 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 687322244 is about 26216.8313112016. The cubic root of 687322244 is about 882.5110117478.

The spelling of 687322244 in words is "six hundred eighty-seven million, three hundred twenty-two thousand, two hundred forty-four".