680995 has 8 divisors (see below), whose sum is σ = 933984. Its totient is φ = 466944.

The previous prime is 680993. The next prime is 681001. The reversal of 680995 is 599086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680995 - 2¹ = 680993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9694 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (116748).

2⁶⁸⁰⁹⁹⁵ is an apocalyptic number.

680995 is a deficient number, since it is larger than the sum of its proper divisors (252989).

680995 is a wasteful number, since it uses less digits than its factorization.

680995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19469.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 680995 is about 825.2242119570. The cubic root of 680995 is about 87.9794631828.

The spelling of 680995 in words is "six hundred eighty thousand, nine hundred ninety-five".