70166917 has 2 divisors, whose sum is σ = 70166918. Its totient is φ = 70166916.

The previous prime is 70166903. The next prime is 70166947. The reversal of 70166917 is 71966107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69739201 + 427716 = 8351^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 70166917 - 2¹¹ = 70164869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70166947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35083458 + 35083459.

It is an arithmetic number, because the mean of its divisors is an integer number (35083459).

Almost surely, 2^70166917 is an apocalyptic number.

It is an amenable number.

70166917 is a deficient number, since it is larger than the sum of its proper divisors (1).

70166917 is an equidigital number, since it uses as much as digits as its factorization.

70166917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70166917 is about 8376.5695245727. The cubic root of 70166917 is about 412.4558473709.

The spelling of 70166917 in words is "seventy million, one hundred sixty-six thousand, nine hundred seventeen".