2643197 has 4 divisors (see below), whose sum is σ = 2655936. Its totient is φ = 2630460.

The previous prime is 2643181. The next prime is 2643209. The reversal of 2643197 is 7913462.

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 2643197 - 2⁴ = 2643181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643107) 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, 6053 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (663984).

2^2643197 is an apocalyptic number.

It is an amenable number.

2643197 is a deficient number, since it is larger than the sum of its proper divisors (12739).

2643197 is a wasteful number, since it uses less digits than its factorization.

2643197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12738.

The product of its digits is 9072, while the sum is 32.

The square root of 2643197 is about 1625.7911920047. The cubic root of 2643197 is about 138.2642315475.

The spelling of 2643197 in words is "two million, six hundred forty-three thousand, one hundred ninety-seven".