686536965 has 48 divisors (see below), whose sum is σ = 1237524288. Its totient is φ = 365129856.

The previous prime is 686536951. The next prime is 686536967. The reversal of 686536965 is 569635686.

686536965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686536965 - 2⁶ = 686536901 is a prime.

It is a super-2 number, since 2×686536965² = 942666008622822450, which contains 22 as substring.

Its product of digits (6998400) is a multiple of the sum of its prime factors (1600).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686536967) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 664089 + ... + 665121.

It is an arithmetic number, because the mean of its divisors is an integer number (25781756).

Almost surely, 2^686536965 is an apocalyptic number.

It is an amenable number.

686536965 is a deficient number, since it is larger than the sum of its proper divisors (550987323).

686536965 is a wasteful number, since it uses less digits than its factorization.

686536965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1588 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The square root of 686536965 is about 26201.8504117553. The cubic root of 686536965 is about 882.1747883498.

The spelling of 686536965 in words is "six hundred eighty-six million, five hundred thirty-six thousand, nine hundred sixty-five".