686812204 has 48 divisors (see below), whose sum is σ = 1333907008. Its totient is φ = 307369728.

The previous prime is 686812193. The next prime is 686812207. The reversal of 686812204 is 402218686.

It is a super-2 number, since 2×686812204² = 943422007126675232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (686812207) by changing a digit.

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, 936622 + ... + 937354.

Almost surely, 2^686812204 is an apocalyptic number.

It is an amenable number.

686812204 is a deficient number, since it is larger than the sum of its proper divisors (647094804).

686812204 is a wasteful number, since it uses less digits than its factorization.

686812204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 686812204 is about 26207.1021671607. The cubic root of 686812204 is about 882.2926632680.

The spelling of 686812204 in words is "six hundred eighty-six million, eight hundred twelve thousand, two hundred four".