9997617 has 24 divisors (see below), whose sum is σ = 16186176. Its totient is φ = 5462688.

The previous prime is 9997613. The next prime is 9997621. The reversal of 9997617 is 7167999.

It is an interprime number because it is at equal distance from previous prime (9997613) and next prime (9997621).

It is not a de Polignac number, because 9997617 - 2² = 9997613 is a prime.

9997617 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9997613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1903 + ... + 4859.

It is an arithmetic number, because the mean of its divisors is an integer number (674424).

Almost surely, 2^9997617 is an apocalyptic number.

It is an amenable number.

9997617 is a deficient number, since it is larger than the sum of its proper divisors (6188559).

9997617 is a wasteful number, since it uses less digits than its factorization.

9997617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997 (or 2990 counting only the distinct ones).

The product of its digits is 214326, while the sum is 48.

The square root of 9997617 is about 3161.9008523355. The cubic root of 9997617 is about 215.4263542507.

The spelling of 9997617 in words is "nine million, nine hundred ninety-seven thousand, six hundred seventeen".