680674705 has 8 divisors (see below), whose sum is σ = 825230952. Its totient is φ = 538925568.

The previous prime is 680674699. The next prime is 680674711. The reversal of 680674705 is 507476086.

It is an interprime number because it is at equal distance from previous prime (680674699) and next prime (680674711).

It can be written as a sum of positive squares in 4 ways, for example, as 33074001 + 647600704 = 5751^2 + 25448^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680674705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701242 + ... + 702211.

It is an arithmetic number, because the mean of its divisors is an integer number (103153869).

Almost surely, 2^680674705 is an apocalyptic number.

It is an amenable number.

680674705 is a deficient number, since it is larger than the sum of its proper divisors (144556247).

680674705 is a wasteful number, since it uses less digits than its factorization.

680674705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403555.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 680674705 is about 26089.7432911863. The cubic root of 680674705 is about 879.6566777993.

The spelling of 680674705 in words is "six hundred eighty million, six hundred seventy-four thousand, seven hundred five".