680345023 has 2 divisors, whose sum is σ = 680345024. Its totient is φ = 680345022.

The previous prime is 680344999. The next prime is 680345033. The reversal of 680345023 is 320543086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680345023 - 2¹⁷ = 680213951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680345033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340172511 + 340172512.

It is an arithmetic number, because the mean of its divisors is an integer number (340172512).

Almost surely, 2^680345023 is an apocalyptic number.

680345023 is a deficient number, since it is larger than the sum of its proper divisors (1).

680345023 is an equidigital number, since it uses as much as digits as its factorization.

680345023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 680345023 is about 26083.4242959010. The cubic root of 680345023 is about 879.5146354970.

The spelling of 680345023 in words is "six hundred eighty million, three hundred forty-five thousand, twenty-three".