2864643 has 8 divisors (see below), whose sum is σ = 3862800. Its totient is φ = 1888128.

The previous prime is 2864633. The next prime is 2864647. The reversal of 2864643 is 3464682.

2864643 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 de Polignac number, because none of the positive numbers 2^k-2864643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2864647) 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, 5098 + ... + 5631.

It is an arithmetic number, because the mean of its divisors is an integer number (482850).

2^2864643 is an apocalyptic number.

2864643 is a deficient number, since it is larger than the sum of its proper divisors (998157).

2864643 is a wasteful number, since it uses less digits than its factorization.

2864643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10821.

The product of its digits is 27648, while the sum is 33.

The square root of 2864643 is about 1692.5256275755. The cubic root of 2864643 is about 142.0223961237.

The spelling of 2864643 in words is "two million, eight hundred sixty-four thousand, six hundred forty-three".