686961036 has 72 divisors (see below), whose sum is σ = 1839808880. Its totient is φ = 215519616.

The previous prime is 686961001. The next prime is 686961049. The reversal of 686961036 is 630169686.

It is a junction number, because it is equal to n+sod(n) for n = 686960982 and 686961000.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 104190 + ... + 110586.

Almost surely, 2^686961036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686961036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919904440).

686961036 is an abundant number, since it is smaller than the sum of its proper divisors (1152847844).

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

686961036 is a wasteful number, since it uses less digits than its factorization.

686961036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6583 (or 6578 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 686961036 is about 26209.9415489619. The cubic root of 686961036 is about 882.3563895175.

The spelling of 686961036 in words is "six hundred eighty-six million, nine hundred sixty-one thousand, thirty-six".