680498023 has 2 divisors, whose sum is σ = 680498024. Its totient is φ = 680498022.

The previous prime is 680498011. The next prime is 680498051. The reversal of 680498023 is 320894086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680498023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680490023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340249011 + 340249012.

It is an arithmetic number, because the mean of its divisors is an integer number (340249012).

Almost surely, 2^680498023 is an apocalyptic number.

680498023 is a deficient number, since it is larger than the sum of its proper divisors (1).

680498023 is an equidigital number, since it uses as much as digits as its factorization.

680498023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 680498023 is about 26086.3570281479. The cubic root of 680498023 is about 879.5805607009.

The spelling of 680498023 in words is "six hundred eighty million, four hundred ninety-eight thousand, twenty-three".