71985703 has 2 divisors, whose sum is σ = 71985704. Its totient is φ = 71985702.

The previous prime is 71985677. The next prime is 71985707. The reversal of 71985703 is 30758917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71985703 - 2²¹ = 69888551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71985707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35992851 + 35992852.

It is an arithmetic number, because the mean of its divisors is an integer number (35992852).

Almost surely, 2^71985703 is an apocalyptic number.

71985703 is a deficient number, since it is larger than the sum of its proper divisors (1).

71985703 is an equidigital number, since it uses as much as digits as its factorization.

71985703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 71985703 is about 8484.4388736086. The cubic root of 71985703 is about 415.9892267150.

The spelling of 71985703 in words is "seventy-one million, nine hundred eighty-five thousand, seven hundred three".