686481234 has 32 divisors (see below), whose sum is σ = 1384096896. Its totient is φ = 226978560.

The previous prime is 686481223. The next prime is 686481241. The reversal of 686481234 is 432184686.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 702154 + ... + 703130.

It is an arithmetic number, because the mean of its divisors is an integer number (43253028).

Almost surely, 2^686481234 is an apocalyptic number.

686481234 is an abundant number, since it is smaller than the sum of its proper divisors (697615662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686481234 is a wasteful number, since it uses less digits than its factorization.

686481234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 221184, while the sum is 42.

The square root of 686481234 is about 26200.7868965800. The cubic root of 686481234 is about 882.1509169411.

The spelling of 686481234 in words is "six hundred eighty-six million, four hundred eighty-one thousand, two hundred thirty-four".