680495 has 4 divisors (see below), whose sum is σ = 816600. Its totient is φ = 544392.

The previous prime is 680489. The next prime is 680503. The reversal of 680495 is 594086.

680495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680495 - 2⁶ = 680431 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68045 + ... + 68054.

It is an arithmetic number, because the mean of its divisors is an integer number (204150).

2⁶⁸⁰⁴⁹⁵ is an apocalyptic number.

680495 is a deficient number, since it is larger than the sum of its proper divisors (136105).

680495 is a wasteful number, since it uses less digits than its factorization.

680495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136104.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 680495 is about 824.9212083587. The cubic root of 680495 is about 87.9579258235.

The spelling of 680495 in words is "six hundred eighty thousand, four hundred ninety-five".