70986529 has 2 divisors, whose sum is σ = 70986530. Its totient is φ = 70986528.

The previous prime is 70986511. The next prime is 70986541. The reversal of 70986529 is 92568907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 762129 = 8380^2 + 873^2 .

It is an emirp because it is prime and its reverse (92568907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70986529 - 2²¹ = 68889377 is a prime.

It is not a weakly prime, because it can be changed into another prime (70986599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35493264 + 35493265.

It is an arithmetic number, because the mean of its divisors is an integer number (35493265).

Almost surely, 2^70986529 is an apocalyptic number.

It is an amenable number.

70986529 is a deficient number, since it is larger than the sum of its proper divisors (1).

70986529 is an equidigital number, since it uses as much as digits as its factorization.

70986529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 70986529 is about 8425.3503784709. The cubic root of 70986529 is about 414.0555850437.

The spelling of 70986529 in words is "seventy million, nine hundred eighty-six thousand, five hundred twenty-nine".