685224059520 has 2304 divisors, whose sum is σ = 3142523744640. Its totient is φ = 124792012800.

The previous prime is 685224059497. The next prime is 685224059579. The reversal of 685224059520 is 25950422586.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 685224059520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 12928755814 + ... + 12928755866.

Almost surely, 2^685224059520 is an apocalyptic number.

685224059520 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 685224059520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571261872320).

685224059520 is an abundant number, since it is smaller than the sum of its proper divisors (2457299685120).

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

685224059520 is a wasteful number, since it uses less digits than its factorization.

685224059520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 685224059520 in words is "six hundred eighty-five billion, two hundred twenty-four million, fifty-nine thousand, five hundred twenty".