2645984 has 24 divisors (see below), whose sum is σ = 5683608. Its totient is φ = 1202560.

The previous prime is 2645977. The next prime is 2645987. The reversal of 2645984 is 4895462.

2645984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 6⁷ + 4³ + 5³ + 9⁴ + 8⁷ + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645987) 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 3 ways as a sum of consecutive naturals, for example, 3407 + ... + 4110.

It is an arithmetic number, because the mean of its divisors is an integer number (236817).

2^2645984 is an apocalyptic number.

It is an amenable number.

2645984 is an abundant number, since it is smaller than the sum of its proper divisors (3037624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645984 is a wasteful number, since it uses less digits than its factorization.

2645984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538 (or 7530 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 2645984 is about 1626.6480873256. The cubic root of 2645984 is about 138.3128099744.

The spelling of 2645984 in words is "two million, six hundred forty-five thousand, nine hundred eighty-four".