686013522 has 32 divisors (see below), whose sum is σ = 1415420352. Its totient is φ = 221494464.

The previous prime is 686013521. The next prime is 686013527. The reversal of 686013522 is 225310686.

686013522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686013522² = 941229104733688968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686013521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43588 + ... + 57200.

It is an arithmetic number, because the mean of its divisors is an integer number (44231886).

Almost surely, 2^686013522 is an apocalyptic number.

686013522 is an abundant number, since it is smaller than the sum of its proper divisors (729406830).

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

686013522 is a wasteful number, since it uses less digits than its factorization.

686013522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13882.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 686013522 is about 26191.8598423251. The cubic root of 686013522 is about 881.9505296681.

The spelling of 686013522 in words is "six hundred eighty-six million, thirteen thousand, five hundred twenty-two".