680397983 has 8 divisors (see below), whose sum is σ = 710623968. Its totient is φ = 650225664.

The previous prime is 680397959. The next prime is 680398027. The reversal of 680397983 is 389793086.

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 680397983 - 2⁸ = 680397727 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 (680397283) 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, 13691 + ... + 39347.

It is an arithmetic number, because the mean of its divisors is an integer number (88827996).

Almost surely, 2^680397983 is an apocalyptic number.

680397983 is a deficient number, since it is larger than the sum of its proper divisors (30225985).

680397983 is a wasteful number, since it uses less digits than its factorization.

680397983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26833.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 680397983 is about 26084.4394802725. The cubic root of 680397983 is about 879.5374562154.

The spelling of 680397983 in words is "six hundred eighty million, three hundred ninety-seven thousand, nine hundred eighty-three".