71366491 has 12 divisors (see below), whose sum is σ = 83225928. Its totient is φ = 61018272.

The previous prime is 71366483. The next prime is 71366509. The reversal of 71366491 is 19466317.

It is not a de Polignac number, because 71366491 - 2³ = 71366483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71366491.

It is not an unprimeable number, because it can be changed into a prime (71366411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20800 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (6935494).

Almost surely, 2^71366491 is an apocalyptic number.

71366491 is a deficient number, since it is larger than the sum of its proper divisors (11859437).

71366491 is a wasteful number, since it uses less digits than its factorization.

71366491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3651 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 71366491 is about 8447.8690212384. The cubic root of 71366491 is about 414.7930278729.

The spelling of 71366491 in words is "seventy-one million, three hundred sixty-six thousand, four hundred ninety-one".