2649689 has 8 divisors (see below), whose sum is σ = 3048768. Its totient is φ = 2255760.

The previous prime is 2649679. The next prime is 2649709. The reversal of 2649689 is 9869462.

2649689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2649689 - 2²⁰ = 1601113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 2304.

It is an arithmetic number, because the mean of its divisors is an integer number (381096).

2^2649689 is an apocalyptic number.

It is an amenable number.

2649689 is a deficient number, since it is larger than the sum of its proper divisors (399079).

2649689 is a wasteful number, since it uses less digits than its factorization.

2649689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its digits is 186624, while the sum is 44.

The square root of 2649689 is about 1627.7865339165. The cubic root of 2649689 is about 138.3773366891.

The spelling of 2649689 in words is "two million, six hundred forty-nine thousand, six hundred eighty-nine".