685247022 has 48 divisors (see below), whose sum is σ = 1524558672. Its totient is φ = 222311040.

The previous prime is 685247021. The next prime is 685247023. The reversal of 685247022 is 220742586.

685247022 is a `hidden beast` number, since 68 + 524 + 70 + 2 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (685247021) and next prime (685247023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685247021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410233 + ... + 411899.

It is an arithmetic number, because the mean of its divisors is an integer number (31761639).

Almost surely, 2^685247022 is an apocalyptic number.

685247022 is an abundant number, since it is smaller than the sum of its proper divisors (839311650).

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

685247022 is a wasteful number, since it uses less digits than its factorization.

685247022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 685247022 is about 26177.2233439683. The cubic root of 685247022 is about 881.6219321541.

The spelling of 685247022 in words is "six hundred eighty-five million, two hundred forty-seven thousand, twenty-two".