685427500 has 30 divisors (see below), whose sum is σ = 1498898324. Its totient is φ = 274170000.

The previous prime is 685427447. The next prime is 685427507. The reversal of 685427500 is 5724586.

It is a happy number.

685427500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 685427500.

It is not an unprimeable number, because it can be changed into a prime (685427507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 134586 + ... + 139585.

Almost surely, 2^685427500 is an apocalyptic number.

It is an amenable number.

685427500 is an abundant number, since it is smaller than the sum of its proper divisors (813470824).

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

685427500 is a wasteful number, since it uses less digits than its factorization.

685427500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274195 (or 274178 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 685427500 is about 26180.6703504704. The cubic root of 685427500 is about 881.6993248758.

The spelling of 685427500 in words is "six hundred eighty-five million, four hundred twenty-seven thousand, five hundred".