686430371 has 16 divisors (see below), whose sum is σ = 767657088. Its totient is φ = 608395200.

The previous prime is 686430317. The next prime is 686430421. The reversal of 686430371 is 173034686.

It is a cyclic number.

It is not a de Polignac number, because 686430371 - 2⁶ = 686430307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686430571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359000 + ... + 360906.

It is an arithmetic number, because the mean of its divisors is an integer number (47978568).

Almost surely, 2^686430371 is an apocalyptic number.

686430371 is a deficient number, since it is larger than the sum of its proper divisors (81226717).

686430371 is a wasteful number, since it uses less digits than its factorization.

686430371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 686430371 is about 26199.8162398136. The cubic root of 686430371 is about 882.1291295282.

The spelling of 686430371 in words is "six hundred eighty-six million, four hundred thirty thousand, three hundred seventy-one".