660080633 has 2 divisors, whose sum is σ = 660080634. Its totient is φ = 660080632.

The previous prime is 660080627. The next prime is 660080639. The reversal of 660080633 is 336080066.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (660080627) and next prime (660080639).

It can be written as a sum of positive squares in only one way, i.e., 485629369 + 174451264 = 22037^2 + 13208^2 .

It is a cyclic number.

It is not a de Polignac number, because 660080633 - 2²⁰ = 659032057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660080633.

It is not a weakly prime, because it can be changed into another prime (660080639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330040316 + 330040317.

It is an arithmetic number, because the mean of its divisors is an integer number (330040317).

Almost surely, 2^660080633 is an apocalyptic number.

It is an amenable number.

660080633 is a deficient number, since it is larger than the sum of its proper divisors (1).

660080633 is an equidigital number, since it uses as much as digits as its factorization.

660080633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 660080633 is about 25692.0344270359. The cubic root of 660080633 is about 870.6942241526.

The spelling of 660080633 in words is "six hundred sixty million, eighty thousand, six hundred thirty-three".