685950677418 has 16 divisors (see below), whose sum is σ = 1380986796096. Its totient is φ = 227135985600.

The previous prime is 685950677369. The next prime is 685950677441. The reversal of 685950677418 is 814776059586.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378559071 + ... + 378560882.

It is an arithmetic number, because the mean of its divisors is an integer number (86311674756).

Almost surely, 2^685950677418 is an apocalyptic number.

685950677418 is an abundant number, since it is smaller than the sum of its proper divisors (695036118678).

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

685950677418 is a wasteful number, since it uses less digits than its factorization.

685950677418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757120109.

The product of its (nonzero) digits is 101606400, while the sum is 66.

The spelling of 685950677418 in words is "six hundred eighty-five billion, nine hundred fifty million, six hundred seventy-seven thousand, four hundred eighteen".