685963080 has 320 divisors, whose sum is σ = 2650190400. Its totient is φ = 157386240.

The previous prime is 685963049. The next prime is 685963081. The reversal of 685963080 is 80369586.

685963080 is a `hidden beast` number, since 6 + 8 + 5 + 9 + 630 + 8 + 0 = 666.

685963080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (685963081) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 676654 + ... + 677666.

It is an arithmetic number, because the mean of its divisors is an integer number (8281845).

Almost surely, 2^685963080 is an apocalyptic number.

685963080 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 685963080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1325095200).

685963080 is an abundant number, since it is smaller than the sum of its proper divisors (1964227320).

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

685963080 is a wasteful number, since it uses less digits than its factorization.

685963080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 685963080 is about 26190.8968918592. The cubic root of 685963080 is about 881.9289127769.

The spelling of 685963080 in words is "six hundred eighty-five million, nine hundred sixty-three thousand, eighty".