2864745 has 48 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 1369728.

The previous prime is 2864737. The next prime is 2864749. The reversal of 2864745 is 5474682.

2864745 is a `hidden beast` number, since 2 + 8 + 647 + 4 + 5 = 666.

It is not a de Polignac number, because 2864745 - 2³ = 2864737 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34474 + ... + 34556.

It is an arithmetic number, because the mean of its divisors is an integer number (114660).

2^2864745 is an apocalyptic number.

It is an amenable number.

2864745 is a deficient number, since it is larger than the sum of its proper divisors (2638935).

2864745 is a wasteful number, since it uses less digits than its factorization.

2864745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 163 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 2864745 is about 1692.5557597905. Note that the first 3 decimals coincide. The cubic root of 2864745 is about 142.0240817453.

The spelling of 2864745 in words is "two million, eight hundred sixty-four thousand, seven hundred forty-five".