685022700 has 36 divisors (see below), whose sum is σ = 1981999880. Its totient is φ = 182672640.

The previous prime is 685022677. The next prime is 685022707. The reversal of 685022700 is 7220586.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (685022707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1141405 + ... + 1142004.

Almost surely, 2^685022700 is an apocalyptic number.

685022700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

685022700 is an abundant number, since it is smaller than the sum of its proper divisors (1296977180).

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

685022700 is a wasteful number, since it uses less digits than its factorization.

685022700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283426 (or 2283419 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 685022700 is about 26172.9383142207. The cubic root of 685022700 is about 881.5257192689.

The spelling of 685022700 in words is "six hundred eighty-five million, twenty-two thousand, seven hundred".