660525079 has 2 divisors, whose sum is σ = 660525080. Its totient is φ = 660525078.

The previous prime is 660525053. The next prime is 660525127. The reversal of 660525079 is 970525066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660525079 - 2¹⁹ = 660000791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660525049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330262539 + 330262540.

It is an arithmetic number, because the mean of its divisors is an integer number (330262540).

Almost surely, 2^660525079 is an apocalyptic number.

660525079 is a deficient number, since it is larger than the sum of its proper divisors (1).

660525079 is an equidigital number, since it uses as much as digits as its factorization.

660525079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 660525079 is about 25700.6824617558. The cubic root of 660525079 is about 870.8895991443.

It can be divided in two parts, 6605 and 25079, that added together give a square (31684 = 178²).

The spelling of 660525079 in words is "six hundred sixty million, five hundred twenty-five thousand, seventy-nine".