2637889 has 4 divisors (see below), whose sum is σ = 2671360. Its totient is φ = 2604420.

The previous prime is 2637799. The next prime is 2637911. The reversal of 2637889 is 9887362.

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 a de Polignac number, because none of the positive numbers 2^k-2637889 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 6 + 3⁵ + 7³ + 8³ + 8⁷ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2637689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16617 + ... + 16774.

It is an arithmetic number, because the mean of its divisors is an integer number (667840).

2^2637889 is an apocalyptic number.

It is an amenable number.

2637889 is a deficient number, since it is larger than the sum of its proper divisors (33471).

2637889 is an equidigital number, since it uses as much as digits as its factorization.

2637889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33470.

The product of its digits is 145152, while the sum is 43.

The square root of 2637889 is about 1624.1579356701. The cubic root of 2637889 is about 138.1716166370.

The spelling of 2637889 in words is "two million, six hundred thirty-seven thousand, eight hundred eighty-nine".