2863649 has 2 divisors, whose sum is σ = 2863650. Its totient is φ = 2863648.

The previous prime is 2863607. The next prime is 2863697. The reversal of 2863649 is 9463682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 1014049 = 1360^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2863649 - 2¹⁶ = 2798113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2863849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1431824 + 1431825.

It is an arithmetic number, because the mean of its divisors is an integer number (1431825).

2^2863649 is an apocalyptic number.

It is an amenable number.

2863649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2863649 is an equidigital number, since it uses as much as digits as its factorization.

2863649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 2863649 is about 1692.2319580956. The cubic root of 2863649 is about 142.0059674805.

The spelling of 2863649 in words is "two million, eight hundred sixty-three thousand, six hundred forty-nine".