71907863 has 2 divisors, whose sum is σ = 71907864. Its totient is φ = 71907862.

The previous prime is 71907827. The next prime is 71907881. The reversal of 71907863 is 36870917.

It is a strong prime.

It is an emirp because it is prime and its reverse (36870917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71907863 - 2¹⁰ = 71906839 is a prime.

It is a super-2 number, since 2×71907863² = 10341481522453538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71907863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71907163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35953931 + 35953932.

It is an arithmetic number, because the mean of its divisors is an integer number (35953932).

Almost surely, 2^71907863 is an apocalyptic number.

71907863 is a deficient number, since it is larger than the sum of its proper divisors (1).

71907863 is an equidigital number, since it uses as much as digits as its factorization.

71907863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 71907863 is about 8479.8504114165. The cubic root of 71907863 is about 415.8392326726.

The spelling of 71907863 in words is "seventy-one million, nine hundred seven thousand, eight hundred sixty-three".