685748980 has 48 divisors (see below), whose sum is σ = 1676868480. Its totient is φ = 230675328.

The previous prime is 685748963. The next prime is 685748981. The reversal of 685748980 is 89847586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685748981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38790 + ... + 53629.

It is an arithmetic number, because the mean of its divisors is an integer number (34934760).

Almost surely, 2^685748980 is an apocalyptic number.

It is an amenable number.

685748980 is an abundant number, since it is smaller than the sum of its proper divisors (991119500).

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

685748980 is a wasteful number, since it uses less digits than its factorization.

685748980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92488 (or 92486 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The square root of 685748980 is about 26186.8092749002. The cubic root of 685748980 is about 881.8371485436.

The spelling of 685748980 in words is "six hundred eighty-five million, seven hundred forty-eight thousand, nine hundred eighty".