71976287 has 2 divisors, whose sum is σ = 71976288. Its totient is φ = 71976286.

The previous prime is 71976257. The next prime is 71976293. The reversal of 71976287 is 78267917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71976287 - 2²⁰ = 70927711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71976217) 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, 35988143 + 35988144.

It is an arithmetic number, because the mean of its divisors is an integer number (35988144).

Almost surely, 2^71976287 is an apocalyptic number.

71976287 is a deficient number, since it is larger than the sum of its proper divisors (1).

71976287 is an equidigital number, since it uses as much as digits as its factorization.

71976287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 47.

The square root of 71976287 is about 8483.8839572451. The cubic root of 71976287 is about 415.9710882736.

The spelling of 71976287 in words is "seventy-one million, nine hundred seventy-six thousand, two hundred eighty-seven".