2638197 has 8 divisors (see below), whose sum is σ = 3908480. Its totient is φ = 1758780.

The previous prime is 2638187. The next prime is 2638199. The reversal of 2638197 is 7918362.

2638197 is a `hidden beast` number, since 2 + 638 + 19 + 7 = 666.

It is not a de Polignac number, because 2638197 - 2¹¹ = 2636149 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 (2638199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48829 + ... + 48882.

It is an arithmetic number, because the mean of its divisors is an integer number (488560).

2^2638197 is an apocalyptic number.

2638197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2638197 is a deficient number, since it is larger than the sum of its proper divisors (1270283).

2638197 is an equidigital number, since it uses as much as digits as its factorization.

2638197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97720 (or 97714 counting only the distinct ones).

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

The square root of 2638197 is about 1624.2527512675. The cubic root of 2638197 is about 138.1769940684.

The spelling of 2638197 in words is "two million, six hundred thirty-eight thousand, one hundred ninety-seven".