686464299 has 6 divisors (see below), whose sum is σ = 991559556. Its totient is φ = 457642860.

The previous prime is 686464283. The next prime is 686464309. The reversal of 686464299 is 992464686.

It is not a de Polignac number, because 686464299 - 2⁴ = 686464283 is a prime.

It is a super-2 number, since 2×686464299² = 942466467603122802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686464099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38136897 + ... + 38136914.

It is an arithmetic number, because the mean of its divisors is an integer number (165259926).

Almost surely, 2^686464299 is an apocalyptic number.

686464299 is a deficient number, since it is larger than the sum of its proper divisors (305095257).

686464299 is a wasteful number, since it uses less digits than its factorization.

686464299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76273817 (or 76273814 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 686464299 is about 26200.4637172703. The cubic root of 686464299 is about 882.1436628712.

The spelling of 686464299 in words is "six hundred eighty-six million, four hundred sixty-four thousand, two hundred ninety-nine".