686961048 has 32 divisors (see below), whose sum is σ = 1776625200. Its totient is φ = 221090688.

The previous prime is 686961001. The next prime is 686961049. The reversal of 686961048 is 840169686.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 686960988 and 686961006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686961049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492811 + ... + 494202.

Almost surely, 2^686961048 is an apocalyptic number.

It is an amenable number.

686961048 is an abundant number, since it is smaller than the sum of its proper divisors (1089664152).

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

686961048 is a wasteful number, since it uses less digits than its factorization.

686961048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987051 (or 987047 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 686961048 is about 26209.9417778827. The cubic root of 686961048 is about 882.3563946552.

The spelling of 686961048 in words is "six hundred eighty-six million, nine hundred sixty-one thousand, forty-eight".