2859644 has 6 divisors (see below), whose sum is σ = 5004384. Its totient is φ = 1429820.

The previous prime is 2859641. The next prime is 2859673. The reversal of 2859644 is 4469582.

It is a junction number, because it is equal to n+sod(n) for n = 2859598 and 2859607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2859641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357452 + ... + 357459.

It is an arithmetic number, because the mean of its divisors is an integer number (834064).

2^2859644 is an apocalyptic number.

It is an amenable number.

2859644 is a deficient number, since it is larger than the sum of its proper divisors (2144740).

2859644 is a wasteful number, since it uses less digits than its factorization.

2859644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714915 (or 714913 counting only the distinct ones).

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

The square root of 2859644 is about 1691.0481956467. The cubic root of 2859644 is about 141.9397350566.

The spelling of 2859644 in words is "two million, eight hundred fifty-nine thousand, six hundred forty-four".