686034506 has 8 divisors (see below), whose sum is σ = 1029222180. Its totient is φ = 342960448.

The previous prime is 686034493. The next prime is 686034523. The reversal of 686034506 is 605430686.

It can be written as a sum of positive squares in 2 ways, for example, as 536339281 + 149695225 = 23159^2 + 12235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 686034506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11231 + ... + 38706.

Almost surely, 2^686034506 is an apocalyptic number.

686034506 is a deficient number, since it is larger than the sum of its proper divisors (343187674).

686034506 is a wasteful number, since it uses less digits than its factorization.

686034506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56808.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 686034506 is about 26192.2604217353. The cubic root of 686034506 is about 881.9595220376.

The spelling of 686034506 in words is "six hundred eighty-six million, thirty-four thousand, five hundred six".