686294830 has 16 divisors (see below), whose sum is σ = 1330356384. Its totient is φ = 253401120.

The previous prime is 686294821. The next prime is 686294857. The reversal of 686294830 is 38492686.

It is a happy number.

686294830 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2639466 + ... + 2639725.

It is an arithmetic number, because the mean of its divisors is an integer number (83147274).

Almost surely, 2^686294830 is an apocalyptic number.

686294830 is a deficient number, since it is larger than the sum of its proper divisors (644061554).

686294830 is a wasteful number, since it uses less digits than its factorization.

686294830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279211.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 686294830 is about 26197.2294336634. The cubic root of 686294830 is about 882.0710646271.

The spelling of 686294830 in words is "six hundred eighty-six million, two hundred ninety-four thousand, eight hundred thirty".