2658849 has 4 divisors (see below), whose sum is σ = 3545136. Its totient is φ = 1772564.

The previous prime is 2658847. The next prime is 2658863. The reversal of 2658849 is 9488562.

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 2658849 - 2¹ = 2658847 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2658849.

It is not an unprimeable number, because it can be changed into a prime (2658847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443139 + ... + 443144.

It is an arithmetic number, because the mean of its divisors is an integer number (886284).

2^2658849 is an apocalyptic number.

It is an amenable number.

2658849 is a deficient number, since it is larger than the sum of its proper divisors (886287).

2658849 is an equidigital number, since it uses as much as digits as its factorization.

2658849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886286.

The product of its digits is 138240, while the sum is 42.

The square root of 2658849 is about 1630.5977431605. The cubic root of 2658849 is about 138.5366105478.

The spelling of 2658849 in words is "two million, six hundred fifty-eight thousand, eight hundred forty-nine".