686961037 has 24 divisors (see below), whose sum is σ = 824263776. Its totient is φ = 570574368.

The previous prime is 686961001. The next prime is 686961049. The reversal of 686961037 is 730169686.

It is not a de Polignac number, because 686961037 - 2¹⁵ = 686928269 is a prime.

It is a super-2 number, since 2×686961037² = 943830932712230738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686961137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213958 + ... + 217144.

It is an arithmetic number, because the mean of its divisors is an integer number (34344324).

Almost surely, 2^686961037 is an apocalyptic number.

It is an amenable number.

686961037 is a deficient number, since it is larger than the sum of its proper divisors (137302739).

686961037 is a wasteful number, since it uses less digits than its factorization.

686961037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 686961037 is about 26209.9415680386. The cubic root of 686961037 is about 882.3563899456.

The spelling of 686961037 in words is "six hundred eighty-six million, nine hundred sixty-one thousand, thirty-seven".