71916983 has 2 divisors, whose sum is σ = 71916984. Its totient is φ = 71916982.

The previous prime is 71916979. The next prime is 71916991. The reversal of 71916983 is 38961917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71916983 - 2² = 71916979 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71916913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35958491 + 35958492.

It is an arithmetic number, because the mean of its divisors is an integer number (35958492).

Almost surely, 2^71916983 is an apocalyptic number.

71916983 is a deficient number, since it is larger than the sum of its proper divisors (1).

71916983 is an equidigital number, since it uses as much as digits as its factorization.

71916983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 71916983 is about 8480.3881397021. The cubic root of 71916983 is about 415.8568120829.

The spelling of 71916983 in words is "seventy-one million, nine hundred sixteen thousand, nine hundred eighty-three".