686428442998 has 8 divisors (see below), whose sum is σ = 1036553018400. Its totient is φ = 340910770200.

The previous prime is 686428442977. The next prime is 686428443011. The reversal of 686428442998 is 899244824686.

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

It is a congruent number.

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, 1151725278 + ... + 1151725873.

It is an arithmetic number, because the mean of its divisors is an integer number (129569127300).

Almost surely, 2^686428442998 is an apocalyptic number.

686428442998 is a deficient number, since it is larger than the sum of its proper divisors (350124575402).

686428442998 is a wasteful number, since it uses less digits than its factorization.

686428442998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303451302.

The product of its digits is 382205952, while the sum is 70.

The spelling of 686428442998 in words is "six hundred eighty-six billion, four hundred twenty-eight million, four hundred forty-two thousand, nine hundred ninety-eight".