680136 has 32 divisors (see below), whose sum is σ = 1801440. Its totient is φ = 213248.

The previous prime is 680129. The next prime is 680159. The reversal of 680136 is 631086.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (56295).

2⁶⁸⁰¹³⁶ is an apocalyptic number.

It is an amenable number.

680136 is an abundant number, since it is smaller than the sum of its proper divisors (1121304).

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

680136 is a wasteful number, since it uses less digits than its factorization.

680136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 680136 is about 824.7035831134. The cubic root of 680136 is about 87.9424554919.

The spelling of 680136 in words is "six hundred eighty thousand, one hundred thirty-six".