686620322 has 16 divisors (see below), whose sum is σ = 1070520192. Its totient is φ = 330004080.

The previous prime is 686620307. The next prime is 686620343. The reversal of 686620322 is 223026686.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49754 + ... + 62037.

It is an arithmetic number, because the mean of its divisors is an integer number (66907512).

Almost surely, 2^686620322 is an apocalyptic number.

686620322 is a deficient number, since it is larger than the sum of its proper divisors (383899870).

686620322 is a wasteful number, since it uses less digits than its factorization.

686620322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111913.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 686620322 is about 26203.4410335742. The cubic root of 686620322 is about 882.2104904662.

The spelling of 686620322 in words is "six hundred eighty-six million, six hundred twenty thousand, three hundred twenty-two".