686310143 has 8 divisors (see below), whose sum is σ = 726488400. Its totient is φ = 647232768.

The previous prime is 686310089. The next prime is 686310167. The reversal of 686310143 is 341013686.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686310143 is a prime.

It is a super-2 number, since 2×686310143² = 942043224769360898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686310173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273938 + ... + 276431.

It is an arithmetic number, because the mean of its divisors is an integer number (90811050).

Almost surely, 2^686310143 is an apocalyptic number.

686310143 is a deficient number, since it is larger than the sum of its proper divisors (40178257).

686310143 is a wasteful number, since it uses less digits than its factorization.

686310143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550441.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 686310143 is about 26197.5216957635. The cubic root of 686310143 is about 882.0776250018.

The spelling of 686310143 in words is "six hundred eighty-six million, three hundred ten thousand, one hundred forty-three".