686783460 has 48 divisors (see below), whose sum is σ = 2097813312. Its totient is φ = 166492800.

The previous prime is 686783437. The next prime is 686783479. The reversal of 686783460 is 64387686.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519631 + ... + 520950.

It is an arithmetic number, because the mean of its divisors is an integer number (43704444).

Almost surely, 2^686783460 is an apocalyptic number.

686783460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

686783460 is an abundant number, since it is smaller than the sum of its proper divisors (1411029852).

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

686783460 is a wasteful number, since it uses less digits than its factorization.

686783460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040604 (or 1040602 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 686783460 is about 26206.5537604623. The cubic root of 686783460 is about 882.2803547243.

The spelling of 686783460 in words is "six hundred eighty-six million, seven hundred eighty-three thousand, four hundred sixty".