71149697 has 2 divisors, whose sum is σ = 71149698. Its totient is φ = 71149696.

The previous prime is 71149657. The next prime is 71149703. The reversal of 71149697 is 79694117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 3400336 = 8231^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 71149697 - 2⁶ = 71149633 is a prime.

It is not a weakly prime, because it can be changed into another prime (71149657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35574848 + 35574849.

It is an arithmetic number, because the mean of its divisors is an integer number (35574849).

Almost surely, 2^71149697 is an apocalyptic number.

It is an amenable number.

71149697 is a deficient number, since it is larger than the sum of its proper divisors (1).

71149697 is an equidigital number, since it uses as much as digits as its factorization.

71149697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 71149697 is about 8435.0279786139. The cubic root of 71149697 is about 414.3725884912.

The spelling of 71149697 in words is "seventy-one million, one hundred forty-nine thousand, six hundred ninety-seven".