680678017 has 8 divisors (see below), whose sum is σ = 697738752. Its totient is φ = 663724800.

The previous prime is 680677973. The next prime is 680678027. The reversal of 680678017 is 710876086.

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 680678017 - 2⁷ = 680677889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680678027) 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, 13984 + ... + 39457.

It is an arithmetic number, because the mean of its divisors is an integer number (87217344).

Almost surely, 2^680678017 is an apocalyptic number.

It is an amenable number.

680678017 is a deficient number, since it is larger than the sum of its proper divisors (17060735).

680678017 is a wasteful number, since it uses less digits than its factorization.

680678017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53759.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 680678017 is about 26089.8067643285. The cubic root of 680678017 is about 879.6581045298.

The spelling of 680678017 in words is "six hundred eighty million, six hundred seventy-eight thousand, seventeen".