971707917 has 16 divisors (see below), whose sum is σ = 1317745152. Its totient is φ = 636792240.

The previous prime is 971707909. The next prime is 971707969. The reversal of 971707917 is 719707179.

It is not a de Polignac number, because 971707917 - 2³ = 971707909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971707907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67338 + ... + 80484.

It is an arithmetic number, because the mean of its divisors is an integer number (82359072).

Almost surely, 2^971707917 is an apocalyptic number.

It is an amenable number.

971707917 is a deficient number, since it is larger than the sum of its proper divisors (346037235).

971707917 is a wasteful number, since it uses less digits than its factorization.

971707917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13568.

The product of its (nonzero) digits is 194481, while the sum is 48.

The square root of 971707917 is about 31172.2299009872. The cubic root of 971707917 is about 990.4789428334.

The spelling of 971707917 in words is "nine hundred seventy-one million, seven hundred seven thousand, nine hundred seventeen".