71194961 has 2 divisors, whose sum is σ = 71194962. Its totient is φ = 71194960.

The previous prime is 71194951. The next prime is 71194969. The reversal of 71194961 is 16949117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 10042561 = 7820^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 71194961 - 2⁶ = 71194897 is a prime.

It is not a weakly prime, because it can be changed into another prime (71194969) 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, 35597480 + 35597481.

It is an arithmetic number, because the mean of its divisors is an integer number (35597481).

Almost surely, 2^71194961 is an apocalyptic number.

It is an amenable number.

71194961 is a deficient number, since it is larger than the sum of its proper divisors (1).

71194961 is an equidigital number, since it uses as much as digits as its factorization.

71194961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 71194961 is about 8437.7106492223. The cubic root of 71194961 is about 414.4604416872.

The spelling of 71194961 in words is "seventy-one million, one hundred ninety-four thousand, nine hundred sixty-one".