684686486 has 24 divisors (see below), whose sum is σ = 1134870912. Its totient is φ = 309570800.

The previous prime is 684686479. The next prime is 684686501.

It is a happy number.

684686486 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×684686486² = 937591168222056392, which contains 22 as substring.

It is a Curzon number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 38816 + ... + 53628.

It is an arithmetic number, because the mean of its divisors is an integer number (47286288).

Almost surely, 2^684686486 is an apocalyptic number.

684686486 is a deficient number, since it is larger than the sum of its proper divisors (450184426).

684686486 is a wasteful number, since it uses less digits than its factorization.

684686486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15028 (or 15017 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 56.

The square root of 684686486 is about 26166.5145940379. The cubic root of 684686486 is about 881.3814759759.

The spelling of 684686486 in words is "six hundred eighty-four million, six hundred eighty-six thousand, four hundred eighty-six".