660234073 has 2 divisors, whose sum is σ = 660234074. Its totient is φ = 660234072.

The previous prime is 660234053. The next prime is 660234077. The reversal of 660234073 is 370432066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627652809 + 32581264 = 25053^2 + 5708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660234073 is a prime.

It is not a weakly prime, because it can be changed into another prime (660234077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330117036 + 330117037.

It is an arithmetic number, because the mean of its divisors is an integer number (330117037).

Almost surely, 2^660234073 is an apocalyptic number.

It is an amenable number.

660234073 is a deficient number, since it is larger than the sum of its proper divisors (1).

660234073 is an equidigital number, since it uses as much as digits as its factorization.

660234073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 660234073 is about 25695.0203930645. The cubic root of 660234073 is about 870.7616850881.

The spelling of 660234073 in words is "six hundred sixty million, two hundred thirty-four thousand, seventy-three".