16970813 has 2 divisors, whose sum is σ = 16970814. Its totient is φ = 16970812.

The previous prime is 16970801. The next prime is 16970831. The reversal of 16970813 is 31807961.

Together with next prime (16970831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14417209 + 2553604 = 3797^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 16970813 - 2⁴ = 16970797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16970873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485406 + 8485407.

It is an arithmetic number, because the mean of its divisors is an integer number (8485407).

Almost surely, 2^16970813 is an apocalyptic number.

It is an amenable number.

16970813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16970813 is an equidigital number, since it uses as much as digits as its factorization.

16970813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 16970813 is about 4119.5646614661. The cubic root of 16970813 is about 256.9809218377.

The spelling of 16970813 in words is "sixteen million, nine hundred seventy thousand, eight hundred thirteen".