685826226 has 24 divisors (see below), whose sum is σ = 1486689984. Its totient is φ = 228495960.

The previous prime is 685826179. The next prime is 685826231. The reversal of 685826226 is 622628586.

685826226 is a `hidden beast` number, since 6 + 8 + 582 + 62 + 2 + 6 = 666.

It is a super-2 number, since 2×685826226² = 940715224538806152, which contains 22 as substring.

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, 33355 + ... + 49841.

It is an arithmetic number, because the mean of its divisors is an integer number (61945416).

Almost surely, 2^685826226 is an apocalyptic number.

685826226 is an abundant number, since it is smaller than the sum of its proper divisors (800863758).

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

685826226 is a wasteful number, since it uses less digits than its factorization.

685826226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806 (or 18803 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 685826226 is about 26188.2841362316. The cubic root of 685826226 is about 881.8702587325.

The spelling of 685826226 in words is "six hundred eighty-five million, eight hundred twenty-six thousand, two hundred twenty-six".