2864645 has 8 divisors (see below), whose sum is σ = 3928704. Its totient is φ = 1964304.

The previous prime is 2864633. The next prime is 2864647. The reversal of 2864645 is 5464682.

2864645 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 2864645 - 2²⁰ = 1816069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 81847 = 2864645 / (2 + 8 + 6 + 4 + 6 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

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, 40889 + ... + 40958.

It is an arithmetic number, because the mean of its divisors is an integer number (491088).

2^2864645 is an apocalyptic number.

It is an amenable number.

2864645 is a deficient number, since it is larger than the sum of its proper divisors (1064059).

2864645 is an equidigital number, since it uses as much as digits as its factorization.

2864645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81859.

The product of its digits is 46080, while the sum is 35.

The square root of 2864645 is about 1692.5262184084. The cubic root of 2864645 is about 142.0224291755.

The spelling of 2864645 in words is "two million, eight hundred sixty-four thousand, six hundred forty-five".