71107897 has 4 divisors (see below), whose sum is σ = 81266176. Its totient is φ = 60949620.

The previous prime is 71107871. The next prime is 71107901. The reversal of 71107897 is 79870117.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79870117 = 373 ⋅214129.

It is a cyclic number.

It is not a de Polignac number, because 71107897 - 2²³ = 62719289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71107297) 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, 5079129 + ... + 5079142.

It is an arithmetic number, because the mean of its divisors is an integer number (20316544).

Almost surely, 2^71107897 is an apocalyptic number.

It is an amenable number.

71107897 is a deficient number, since it is larger than the sum of its proper divisors (10158279).

71107897 is a wasteful number, since it uses less digits than its factorization.

71107897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10158278.

The product of its (nonzero) digits is 24696, while the sum is 40.

The square root of 71107897 is about 8432.5498516167. The cubic root of 71107897 is about 414.2914254974.

The spelling of 71107897 in words is "seventy-one million, one hundred seven thousand, eight hundred ninety-seven".