70647613 has 2 divisors, whose sum is σ = 70647614. Its totient is φ = 70647612.

The previous prime is 70647607. The next prime is 70647617. The reversal of 70647613 is 31674607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68343289 + 2304324 = 8267^2 + 1518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70647613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70647617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35323806 + 35323807.

It is an arithmetic number, because the mean of its divisors is an integer number (35323807).

Almost surely, 2^70647613 is an apocalyptic number.

It is an amenable number.

70647613 is a deficient number, since it is larger than the sum of its proper divisors (1).

70647613 is an equidigital number, since it uses as much as digits as its factorization.

70647613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 70647613 is about 8405.2134416682. The cubic root of 70647613 is about 413.3955819504.

The spelling of 70647613 in words is "seventy million, six hundred forty-seven thousand, six hundred thirteen".