685180756080 has 200 divisors, whose sum is σ = 2388209426064. Its totient is φ = 182064153600.

The previous prime is 685180756031. The next prime is 685180756129. The reversal of 685180756080 is 80657081586.

685180756080 is a `hidden beast` number, since 68 + 5 + 18 + 0 + 7 + 560 + 8 + 0 = 666.

685180756080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685180756031) and next prime (685180756129).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1632735 + ... + 2009025.

Almost surely, 2^685180756080 is an apocalyptic number.

685180756080 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 685180756080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194104713032).

685180756080 is an abundant number, since it is smaller than the sum of its proper divisors (1703028669984).

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

685180756080 is a wasteful number, since it uses less digits than its factorization.

685180756080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376597 (or 376582 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 685180756080 in words is "six hundred eighty-five billion, one hundred eighty million, seven hundred fifty-six thousand, eighty".