680533123 has 2 divisors, whose sum is σ = 680533124. Its totient is φ = 680533122.

The previous prime is 680533067. The next prime is 680533153. The reversal of 680533123 is 321335086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680533123 - 2¹³ = 680524931 is a prime.

It is not a weakly prime, because it can be changed into another prime (680533153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340266561 + 340266562.

It is an arithmetic number, because the mean of its divisors is an integer number (340266562).

Almost surely, 2^680533123 is an apocalyptic number.

680533123 is a deficient number, since it is larger than the sum of its proper divisors (1).

680533123 is an equidigital number, since it uses as much as digits as its factorization.

680533123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 680533123 is about 26087.0297849334. The cubic root of 680533123 is about 879.5956833248.

The spelling of 680533123 in words is "six hundred eighty million, five hundred thirty-three thousand, one hundred twenty-three".