70195889 has 2 divisors, whose sum is σ = 70195890. Its totient is φ = 70195888.

The previous prime is 70195877. The next prime is 70195897. The reversal of 70195889 is 98859107.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45792289 + 24403600 = 6767^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 70195889 - 2¹⁶ = 70130353 is a prime.

It is not a weakly prime, because it can be changed into another prime (70195849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35097944 + 35097945.

It is an arithmetic number, because the mean of its divisors is an integer number (35097945).

Almost surely, 2^70195889 is an apocalyptic number.

It is an amenable number.

70195889 is a deficient number, since it is larger than the sum of its proper divisors (1).

70195889 is an equidigital number, since it uses as much as digits as its factorization.

70195889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 70195889 is about 8378.2986936490. The cubic root of 70195889 is about 412.5126073894.

The spelling of 70195889 in words is "seventy million, one hundred ninety-five thousand, eight hundred eighty-nine".