680986297 has 4 divisors (see below), whose sum is σ = 681110500. Its totient is φ = 680862096.

The previous prime is 680986279. The next prime is 680986307. The reversal of 680986297 is 792689086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15139881 + 665846416 = 3891^2 + 25804^2 .

It is a cyclic number.

It is not a de Polignac number, because 680986297 - 2⁷ = 680986169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680986237) 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, 53478 + ... + 64975.

It is an arithmetic number, because the mean of its divisors is an integer number (170277625).

Almost surely, 2^680986297 is an apocalyptic number.

It is an amenable number.

680986297 is a deficient number, since it is larger than the sum of its proper divisors (124203).

680986297 is a wasteful number, since it uses less digits than its factorization.

680986297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124202.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 680986297 is about 26095.7141500285. The cubic root of 680986297 is about 879.7908839373.

The spelling of 680986297 in words is "six hundred eighty million, nine hundred eighty-six thousand, two hundred ninety-seven".