686007231 has 16 divisors (see below), whose sum is σ = 1125755904. Its totient is φ = 361849824.

The previous prime is 686007229. The next prime is 686007299. The reversal of 686007231 is 132700686.

It is not a de Polignac number, because 686007231 - 2¹ = 686007229 is a prime.

It is a super-2 number, since 2×686007231² = 941211841968574722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686007192 and 686007201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686007431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256151 + ... + 1256696.

It is an arithmetic number, because the mean of its divisors is an integer number (70359744).

Almost surely, 2^686007231 is an apocalyptic number.

686007231 is a deficient number, since it is larger than the sum of its proper divisors (439748673).

686007231 is a wasteful number, since it uses less digits than its factorization.

686007231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512870.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 686007231 is about 26191.7397474853. The cubic root of 686007231 is about 881.9478337213.

The spelling of 686007231 in words is "six hundred eighty-six million, seven thousand, two hundred thirty-one".