680893 has 4 divisors (see below), whose sum is σ = 682560. Its totient is φ = 679228.

The previous prime is 680881. The next prime is 680917. The reversal of 680893 is 398086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 680893 - 2⁵ = 680861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246 + ... + 1192.

It is an arithmetic number, because the mean of its divisors is an integer number (170640).

2⁶⁸⁰⁸⁹³ is an apocalyptic number.

It is an amenable number.

680893 is a deficient number, since it is larger than the sum of its proper divisors (1667).

680893 is an equidigital number, since it uses as much as digits as its factorization.

680893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 680893 is about 825.1624082567. The cubic root of 680893 is about 87.9750704177.

The spelling of 680893 in words is "six hundred eighty thousand, eight hundred ninety-three".