71097917 has 8 divisors (see below), whose sum is σ = 78433920. Its totient is φ = 63907360.

The previous prime is 71097907. The next prime is 71097941. The reversal of 71097917 is 71979017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71097917 - 2⁸ = 71097661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71097907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35333 + ... + 37290.

It is an arithmetic number, because the mean of its divisors is an integer number (9804240).

Almost surely, 2^71097917 is an apocalyptic number.

It is an amenable number.

71097917 is a deficient number, since it is larger than the sum of its proper divisors (7336003).

71097917 is a wasteful number, since it uses less digits than its factorization.

71097917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72723.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 71097917 is about 8431.9580762715. The cubic root of 71097917 is about 414.2720426438.

The spelling of 71097917 in words is "seventy-one million, ninety-seven thousand, nine hundred seventeen".