2168397 has 48 divisors (see below), whose sum is σ = 4104000. Its totient is φ = 1118880.

The previous prime is 2168377. The next prime is 2168399. The reversal of 2168397 is 7938612.

It is not a de Polignac number, because 2168397 - 2²⁰ = 1119821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14479 + ... + 14627.

It is an arithmetic number, because the mean of its divisors is an integer number (85500).

2^2168397 is an apocalyptic number.

2168397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2168397 is a deficient number, since it is larger than the sum of its proper divisors (1935603).

2168397 is a wasteful number, since it uses less digits than its factorization.

2168397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 170 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2168397 is about 1472.5477920937. The cubic root of 2168397 is about 129.4333721051.

The spelling of 2168397 in words is "two million, one hundred sixty-eight thousand, three hundred ninety-seven".