2895643 has 2 divisors, whose sum is σ = 2895644. Its totient is φ = 2895642.

The previous prime is 2895637. The next prime is 2895647. The reversal of 2895643 is 3465982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2895643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2895647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1447821 + 1447822.

It is an arithmetic number, because the mean of its divisors is an integer number (1447822).

2^2895643 is an apocalyptic number.

2895643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2895643 is an equidigital number, since it uses as much as digits as its factorization.

2895643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 2895643 is about 1701.6588964890. The cubic root of 2895643 is about 142.5328620220.

It can be divided in two parts, 2895 and 643, that multiplied together give a triangular number (1861485 = T₁₉₂₉).

The spelling of 2895643 in words is "two million, eight hundred ninety-five thousand, six hundred forty-three".