16970861 has 2 divisors, whose sum is σ = 16970862. Its totient is φ = 16970860.

The previous prime is 16970851. The next prime is 16970869. The reversal of 16970861 is 16807961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 37636 = 4115^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 16970861 - 2⁶ = 16970797 is a prime.

It is a super-3 number, since 3×16970861³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16970869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485430 + 8485431.

It is an arithmetic number, because the mean of its divisors is an integer number (8485431).

Almost surely, 2^16970861 is an apocalyptic number.

It is an amenable number.

16970861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16970861 is an equidigital number, since it uses as much as digits as its factorization.

16970861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 16970861 is about 4119.5704873202. The cubic root of 16970861 is about 256.9811641179.

The spelling of 16970861 in words is "sixteen million, nine hundred seventy thousand, eight hundred sixty-one".