685910466 has 24 divisors (see below), whose sum is σ = 1486809324. Its totient is φ = 228533760.

The previous prime is 685910437. The next prime is 685910473. The reversal of 685910466 is 664019586.

It can be written as a sum of positive squares in 2 ways, for example, as 504227025 + 181683441 = 22455^2 + 13479^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39826 + ... + 54386.

Almost surely, 2^685910466 is an apocalyptic number.

685910466 is an abundant number, since it is smaller than the sum of its proper divisors (800898858).

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

685910466 is a wasteful number, since it uses less digits than its factorization.

685910466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17186 (or 17183 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 685910466 is about 26189.8924396417. The cubic root of 685910466 is about 881.9063639471.

The spelling of 685910466 in words is "six hundred eighty-five million, nine hundred ten thousand, four hundred sixty-six".