684667480 has 32 divisors (see below), whose sum is σ = 1760574240. Its totient is φ = 234743040.

The previous prime is 684667441. The next prime is 684667507. The reversal of 684667480 is 84766486.

It is a congruent number.

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, 1222341 + ... + 1222900.

It is an arithmetic number, because the mean of its divisors is an integer number (55017945).

Almost surely, 2^684667480 is an apocalyptic number.

It is an amenable number.

684667480 is an abundant number, since it is smaller than the sum of its proper divisors (1075906760).

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

684667480 is a wasteful number, since it uses less digits than its factorization.

684667480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445259 (or 2445255 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The square root of 684667480 is about 26166.1514174324. The cubic root of 684667480 is about 881.3733205687.

The spelling of 684667480 in words is "six hundred eighty-four million, six hundred sixty-seven thousand, four hundred eighty".