685704000 has 112 divisors (see below), whose sum is σ = 2264273856. Its totient is φ = 182848000.

The previous prime is 685703957. The next prime is 685704023. The reversal of 685704000 is 407586.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9715 + ... + 38285.

Almost surely, 2^685704000 is an apocalyptic number.

685704000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685704000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132136928).

685704000 is an abundant number, since it is smaller than the sum of its proper divisors (1578569856).

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

685704000 is a wasteful number, since it uses less digits than its factorization.

685704000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28601 (or 28581 counting only the distinct ones).

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

The square root of 685704000 is about 26185.9504314814. The cubic root of 685704000 is about 881.8178674833.

The spelling of 685704000 in words is "six hundred eighty-five million, seven hundred four thousand".