685378700 has 18 divisors (see below), whose sum is σ = 1487271996. Its totient is φ = 274151440.

The previous prime is 685378637. The next prime is 685378703. The reversal of 685378700 is 7873586.

It is not an unprimeable number, because it can be changed into a prime (685378703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3426794 + ... + 3426993.

It is an arithmetic number, because the mean of its divisors is an integer number (82626222).

Almost surely, 2^685378700 is an apocalyptic number.

It is an amenable number.

685378700 is an abundant number, since it is smaller than the sum of its proper divisors (801893296).

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

685378700 is a wasteful number, since it uses less digits than its factorization.

685378700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853801 (or 6853794 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 685378700 is about 26179.7383485779. The cubic root of 685378700 is about 881.6783997606.

The spelling of 685378700 in words is "six hundred eighty-five million, three hundred seventy-eight thousand, seven hundred".