680740153 has 2 divisors, whose sum is σ = 680740154. Its totient is φ = 680740152.

The previous prime is 680740147. The next prime is 680740157. The reversal of 680740153 is 351047086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417262329 + 263477824 = 20427^2 + 16232^2 .

It is a cyclic number.

It is not a de Polignac number, because 680740153 - 2²⁹ = 143869241 is a prime.

It is not a weakly prime, because it can be changed into another prime (680740157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340370076 + 340370077.

It is an arithmetic number, because the mean of its divisors is an integer number (340370077).

Almost surely, 2^680740153 is an apocalyptic number.

It is an amenable number.

680740153 is a deficient number, since it is larger than the sum of its proper divisors (1).

680740153 is an equidigital number, since it uses as much as digits as its factorization.

680740153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 680740153 is about 26090.9975470468. The cubic root of 680740153 is about 879.6848703778.

The spelling of 680740153 in words is "six hundred eighty million, seven hundred forty thousand, one hundred fifty-three".