686450456 has 32 divisors (see below), whose sum is σ = 1345248000. Its totient is φ = 327766560.

The previous prime is 686450447. The next prime is 686450459. The reversal of 686450456 is 654054686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686450459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124445 + ... + 129843.

It is an arithmetic number, because the mean of its divisors is an integer number (42039000).

Almost surely, 2^686450456 is an apocalyptic number.

It is an amenable number.

686450456 is a deficient number, since it is larger than the sum of its proper divisors (658797544).

686450456 is a wasteful number, since it uses less digits than its factorization.

686450456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119 (or 6115 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 686450456 is about 26200.1995412249. The cubic root of 686450456 is about 882.1377331640.

The spelling of 686450456 in words is "six hundred eighty-six million, four hundred fifty thousand, four hundred fifty-six".