70660529 has 2 divisors, whose sum is σ = 70660530. Its totient is φ = 70660528.

The previous prime is 70660493. The next prime is 70660543. The reversal of 70660529 is 92506607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57410929 + 13249600 = 7577^2 + 3640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70660529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70660729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35330264 + 35330265.

It is an arithmetic number, because the mean of its divisors is an integer number (35330265).

Almost surely, 2^70660529 is an apocalyptic number.

It is an amenable number.

70660529 is a deficient number, since it is larger than the sum of its proper divisors (1).

70660529 is an equidigital number, since it uses as much as digits as its factorization.

70660529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 70660529 is about 8405.9817392140. The cubic root of 70660529 is about 413.4207731387.

The spelling of 70660529 in words is "seventy million, six hundred sixty thousand, five hundred twenty-nine".