686362319 has 2 divisors, whose sum is σ = 686362320. Its totient is φ = 686362318.

The previous prime is 686362309. The next prime is 686362333. The reversal of 686362319 is 913263686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686362319 - 2²⁸ = 417926863 is a prime.

It is a super-2 number, since 2×686362319² = 942186465886115522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 686362319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686362309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343181159 + 343181160.

It is an arithmetic number, because the mean of its divisors is an integer number (343181160).

Almost surely, 2^686362319 is an apocalyptic number.

686362319 is a deficient number, since it is larger than the sum of its proper divisors (1).

686362319 is an equidigital number, since it uses as much as digits as its factorization.

686362319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 686362319 is about 26198.5174962249. The cubic root of 686362319 is about 882.0999774404.

The spelling of 686362319 in words is "six hundred eighty-six million, three hundred sixty-two thousand, three hundred nineteen".