680722 has 8 divisors (see below), whose sum is σ = 1166976. Its totient is φ = 291732.

The previous prime is 680707. The next prime is 680749. The reversal of 680722 is 227086.

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

It is an unprimeable number.

680722 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24298 + ... + 24325.

It is an arithmetic number, because the mean of its divisors is an integer number (145872).

2⁶⁸⁰⁷²² is an apocalyptic number.

680722 is a deficient number, since it is larger than the sum of its proper divisors (486254).

680722 is a wasteful number, since it uses less digits than its factorization.

680722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48632.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 680722 is about 825.0587857844. The cubic root of 680722 is about 87.9677050918.

The spelling of 680722 in words is "six hundred eighty thousand, seven hundred twenty-two".