9997318 has 8 divisors (see below), whose sum is σ = 15648048. Its totient is φ = 4781304.

The previous prime is 9997303. The next prime is 9997319. The reversal of 9997318 is 8137999.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 217333 = 9997318 / (9 + 9 + 9 + 7 + 3 + 1 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997319) 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, 108621 + ... + 108712.

It is an arithmetic number, because the mean of its divisors is an integer number (1956006).

Almost surely, 2^9997318 is an apocalyptic number.

9997318 is a deficient number, since it is larger than the sum of its proper divisors (5650730).

9997318 is a wasteful number, since it uses less digits than its factorization.

9997318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217358.

The product of its digits is 122472, while the sum is 46.

The square root of 9997318 is about 3161.8535702970. The cubic root of 9997318 is about 215.4242066349.

The spelling of 9997318 in words is "nine million, nine hundred ninety-seven thousand, three hundred eighteen".