2864689 has 2 divisors, whose sum is σ = 2864690. Its totient is φ = 2864688.

The previous prime is 2864683. The next prime is 2864713. The reversal of 2864689 is 9864682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2614689 + 250000 = 1617^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2864689 - 2³ = 2864681 is a prime.

It is not a weakly prime, because it can be changed into another prime (2864681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432344 + 1432345.

It is an arithmetic number, because the mean of its divisors is an integer number (1432345).

2^2864689 is an apocalyptic number.

It is an amenable number.

2864689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864689 is an equidigital number, since it uses as much as digits as its factorization.

2864689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 2864689 is about 1692.5392166801. The cubic root of 2864689 is about 142.0231563109.

It can be divided in two parts, 2864 and 689, that added together give a palindrome (3553).

The spelling of 2864689 in words is "two million, eight hundred sixty-four thousand, six hundred eighty-nine".