686005074 has 12 divisors (see below), whose sum is σ = 1486344366. Its totient is φ = 228668352.

The previous prime is 686005057. The next prime is 686005081. The reversal of 686005074 is 470500686.

It is a happy number.

686005074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 676364049 + 9641025 = 26007^2 + 3105^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19055679 + ... + 19055714.

Almost surely, 2^686005074 is an apocalyptic number.

686005074 is an abundant number, since it is smaller than the sum of its proper divisors (800339292).

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

686005074 is a wasteful number, since it uses less digits than its factorization.

686005074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38111401 (or 38111398 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 686005074 is about 26191.6985703486. The cubic root of 686005074 is about 881.9469093562.

The spelling of 686005074 in words is "six hundred eighty-six million, five thousand, seventy-four".