687294930 has 64 divisors (see below), whose sum is σ = 1916091648. Its totient is φ = 154517760.

The previous prime is 687294913. The next prime is 687294997. The reversal of 687294930 is 39492786.

It is a self number, because there is not a number n which added to its sum of digits gives 687294930.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14017 + ... + 39636.

It is an arithmetic number, because the mean of its divisors is an integer number (29938932).

Almost surely, 2^687294930 is an apocalyptic number.

687294930 is an abundant number, since it is smaller than the sum of its proper divisors (1228796718).

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

687294930 is a wasteful number, since it uses less digits than its factorization.

687294930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53731.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 687294930 is about 26216.3103811349. The cubic root of 687294930 is about 882.4993213433.

The spelling of 687294930 in words is "six hundred eighty-seven million, two hundred ninety-four thousand, nine hundred thirty".