71368081 has 4 divisors (see below), whose sum is σ = 71392752. Its totient is φ = 71343412.

The previous prime is 71368049. The next prime is 71368093. The reversal of 71368081 is 18086317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71368081 - 2⁵ = 71368049 is a prime.

It is a super-2 number, since 2×71368081² = 10186805971245122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71368001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7315 + ... + 14008.

It is an arithmetic number, because the mean of its divisors is an integer number (17848188).

Almost surely, 2^71368081 is an apocalyptic number.

It is an amenable number.

71368081 is a deficient number, since it is larger than the sum of its proper divisors (24671).

71368081 is a wasteful number, since it uses less digits than its factorization.

71368081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24670.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 71368081 is about 8447.9631272870. The cubic root of 71368081 is about 414.7961082916.

The spelling of 71368081 in words is "seventy-one million, three hundred sixty-eight thousand, eighty-one".