686094167040 has 88 divisors (see below), whose sum is σ = 2194429361520. Its totient is φ = 182958440448.

The previous prime is 686094166999. The next prime is 686094167041. The reversal of 686094167040 is 40761490686.

It is a super-2 number, since 2×686094167040² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686094167041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22318435 + ... + 22349154.

It is an arithmetic number, because the mean of its divisors is an integer number (24936697290).

Almost surely, 2^686094167040 is an apocalyptic number.

686094167040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

686094167040 is an abundant number, since it is smaller than the sum of its proper divisors (1508335194480).

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

686094167040 is a wasteful number, since it uses less digits than its factorization.

686094167040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44667617 (or 44667599 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 686094167040 in words is "six hundred eighty-six billion, ninety-four million, one hundred sixty-seven thousand, forty".