686650460 has 12 divisors (see below), whose sum is σ = 1441966008. Its totient is φ = 274660176.

The previous prime is 686650399. The next prime is 686650463. The reversal of 686650460 is 64056686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686650463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17166242 + ... + 17166281.

It is an arithmetic number, because the mean of its divisors is an integer number (120163834).

Almost surely, 2^686650460 is an apocalyptic number.

It is an amenable number.

686650460 is an abundant number, since it is smaller than the sum of its proper divisors (755315548).

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

686650460 is a wasteful number, since it uses less digits than its factorization.

686650460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34332532 (or 34332530 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 686650460 is about 26204.0161044066. The cubic root of 686650460 is about 882.2233979737.

The spelling of 686650460 in words is "six hundred eighty-six million, six hundred fifty thousand, four hundred sixty".