2774889 has 24 divisors (see below), whose sum is σ = 4440072. Its totient is φ = 1658880.

The previous prime is 2774873. The next prime is 2774897. The reversal of 2774889 is 9884772.

It can be written as a sum of positive squares in 4 ways, for example, as 1040400 + 1734489 = 1020^2 + 1317^2 .

It is not a de Polignac number, because 2774889 - 2⁴ = 2774873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2774819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4009 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (185003).

2^2774889 is an apocalyptic number.

It is an amenable number.

2774889 is a deficient number, since it is larger than the sum of its proper divisors (1665183).

2774889 is a wasteful number, since it uses less digits than its factorization.

2774889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 694 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 2774889 is about 1665.7998079001. The cubic root of 2774889 is about 140.5233641907.

It can be divided in two parts, 2774 and 889, that added together give a palindrome (3663).

The spelling of 2774889 in words is "two million, seven hundred seventy-four thousand, eight hundred eighty-nine".