2865749 has 2 divisors, whose sum is σ = 2865750. Its totient is φ = 2865748.

The previous prime is 2865743. The next prime is 2865787. The reversal of 2865749 is 9475682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 208849 = 1630^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865749 - 2⁸ = 2865493 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 8 + 6⁸ + 5⁷ + 7³ + 4¹⁰ + 9⁵ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2865743) 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 as a sum of consecutive naturals, namely, 1432874 + 1432875.

It is an arithmetic number, because the mean of its divisors is an integer number (1432875).

2^2865749 is an apocalyptic number.

It is an amenable number.

2865749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865749 is an equidigital number, since it uses as much as digits as its factorization.

2865749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 2865749 is about 1692.8523266960. The cubic root of 2865749 is about 142.0406714154.

The spelling of 2865749 in words is "two million, eight hundred sixty-five thousand, seven hundred forty-nine".