71995801 has 2 divisors, whose sum is σ = 71995802. Its totient is φ = 71995800.

The previous prime is 71995793. The next prime is 71995813. The reversal of 71995801 is 10859917.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71995225 + 576 = 8485^2 + 24^2 .

It is a cyclic number.

It is not a de Polignac number, because 71995801 - 2³ = 71995793 is a prime.

It is not a weakly prime, because it can be changed into another prime (71995831) 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, 35997900 + 35997901.

It is an arithmetic number, because the mean of its divisors is an integer number (35997901).

Almost surely, 2^71995801 is an apocalyptic number.

It is an amenable number.

71995801 is a deficient number, since it is larger than the sum of its proper divisors (1).

71995801 is an equidigital number, since it uses as much as digits as its factorization.

71995801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 71995801 is about 8485.0339421831. The cubic root of 71995801 is about 416.0086771643.

The spelling of 71995801 in words is "seventy-one million, nine hundred ninety-five thousand, eight hundred one".