680833651 has 2 divisors, whose sum is σ = 680833652. Its totient is φ = 680833650.

The previous prime is 680833639. The next prime is 680833661. The reversal of 680833651 is 156338086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680833651 - 2¹⁹ = 680309363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (680833661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340416825 + 340416826.

It is an arithmetic number, because the mean of its divisors is an integer number (340416826).

Almost surely, 2^680833651 is an apocalyptic number.

680833651 is a deficient number, since it is larger than the sum of its proper divisors (1).

680833651 is an equidigital number, since it uses as much as digits as its factorization.

680833651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 680833651 is about 26092.7892529718. The cubic root of 680833651 is about 879.7251427247.

The spelling of 680833651 in words is "six hundred eighty million, eight hundred thirty-three thousand, six hundred fifty-one".