70139513 has 2 divisors, whose sum is σ = 70139514. Its totient is φ = 70139512.

The previous prime is 70139497. The next prime is 70139591. The reversal of 70139513 is 31593107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66797929 + 3341584 = 8173^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 70139513 - 2⁴ = 70139497 is a prime.

It is equal to p_4125764 and since 70139513 and 4125764 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70139413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35069756 + 35069757.

It is an arithmetic number, because the mean of its divisors is an integer number (35069757).

Almost surely, 2^70139513 is an apocalyptic number.

It is an amenable number.

70139513 is a deficient number, since it is larger than the sum of its proper divisors (1).

70139513 is an equidigital number, since it uses as much as digits as its factorization.

70139513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 70139513 is about 8374.9336116772. The cubic root of 70139513 is about 412.4021448935.

The spelling of 70139513 in words is "seventy million, one hundred thirty-nine thousand, five hundred thirteen".