71364091 has 4 divisors (see below), whose sum is σ = 71387712. Its totient is φ = 71340472.

The previous prime is 71364089. The next prime is 71364103. The reversal of 71364091 is 19046317.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19046317 = 127 ⋅149971.

It is a cyclic number.

It is not a de Polignac number, because 71364091 - 2¹ = 71364089 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71364031) 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, 6475 + ... + 13588.

It is an arithmetic number, because the mean of its divisors is an integer number (17846928).

Almost surely, 2^71364091 is an apocalyptic number.

71364091 is the 4516-th centered heptagonal number.

71364091 is a deficient number, since it is larger than the sum of its proper divisors (23621).

71364091 is a wasteful number, since it uses less digits than its factorization.

71364091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23620.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 71364091 is about 8447.7269723873. The cubic root of 71364091 is about 414.7883780977.

The spelling of 71364091 in words is "seventy-one million, three hundred sixty-four thousand, ninety-one".