70213513 has 2 divisors, whose sum is σ = 70213514. Its totient is φ = 70213512.

The previous prime is 70213489. The next prime is 70213529. The reversal of 70213513 is 31531207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 26296384 = 6627^2 + 5128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70213513 is a prime.

It is not a weakly prime, because it can be changed into another prime (70214513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35106756 + 35106757.

It is an arithmetic number, because the mean of its divisors is an integer number (35106757).

Almost surely, 2^70213513 is an apocalyptic number.

It is an amenable number.

70213513 is a deficient number, since it is larger than the sum of its proper divisors (1).

70213513 is an equidigital number, since it uses as much as digits as its factorization.

70213513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 70213513 is about 8379.3503924827. The cubic root of 70213513 is about 412.5471275204.

The spelling of 70213513 in words is "seventy million, two hundred thirteen thousand, five hundred thirteen".