71895973 has 2 divisors, whose sum is σ = 71895974. Its totient is φ = 71895972.

The previous prime is 71895841. The next prime is 71895977. The reversal of 71895973 is 37959817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48692484 + 23203489 = 6978^2 + 4817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71895973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71895977) 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, 35947986 + 35947987.

It is an arithmetic number, because the mean of its divisors is an integer number (35947987).

Almost surely, 2^71895973 is an apocalyptic number.

It is an amenable number.

71895973 is a deficient number, since it is larger than the sum of its proper divisors (1).

71895973 is an equidigital number, since it uses as much as digits as its factorization.

71895973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 71895973 is about 8479.1493087455. The cubic root of 71895973 is about 415.8163116697.

The spelling of 71895973 in words is "seventy-one million, eight hundred ninety-five thousand, nine hundred seventy-three".