71868607 has 2 divisors, whose sum is σ = 71868608. Its totient is φ = 71868606.

The previous prime is 71868551. The next prime is 71868611. The reversal of 71868607 is 70686817.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71868607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71868637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35934303 + 35934304.

It is an arithmetic number, because the mean of its divisors is an integer number (35934304).

Almost surely, 2^71868607 is an apocalyptic number.

71868607 is a deficient number, since it is larger than the sum of its proper divisors (1).

71868607 is an equidigital number, since it uses as much as digits as its factorization.

71868607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 71868607 is about 8477.5354319519. The cubic root of 71868607 is about 415.7635471323.

The spelling of 71868607 in words is "seventy-one million, eight hundred sixty-eight thousand, six hundred seven".