71326687 has 2 divisors, whose sum is σ = 71326688. Its totient is φ = 71326686.

The previous prime is 71326613. The next prime is 71326709. The reversal of 71326687 is 78662317.

It is a strong prime.

It is an emirp because it is prime and its reverse (78662317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71326687 - 2²³ = 62938079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71327687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35663343 + 35663344.

It is an arithmetic number, because the mean of its divisors is an integer number (35663344).

Almost surely, 2^71326687 is an apocalyptic number.

71326687 is a deficient number, since it is larger than the sum of its proper divisors (1).

71326687 is an equidigital number, since it uses as much as digits as its factorization.

71326687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 71326687 is about 8445.5128322678. The cubic root of 71326687 is about 414.7158978739.

The spelling of 71326687 in words is "seventy-one million, three hundred twenty-six thousand, six hundred eighty-seven".