2688197 has 4 divisors (see below), whose sum is σ = 2714400. Its totient is φ = 2661996.

The previous prime is 2688187. The next prime is 2688221. The reversal of 2688197 is 7918862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2688197 - 2⁴ = 2688181 is a prime.

It is a super-2 number, since 2×2688197² = 14452806221618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688137) 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, 12947 + ... + 13152.

It is an arithmetic number, because the mean of its divisors is an integer number (678600).

2^2688197 is an apocalyptic number.

It is an amenable number.

2688197 is a deficient number, since it is larger than the sum of its proper divisors (26203).

2688197 is a wasteful number, since it uses less digits than its factorization.

2688197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26202.

The product of its digits is 48384, while the sum is 41.

The square root of 2688197 is about 1639.5722003010. The cubic root of 2688197 is about 139.0444624250.

The spelling of 2688197 in words is "two million, six hundred eighty-eight thousand, one hundred ninety-seven".