2774813 has 4 divisors (see below), whose sum is σ = 2800380. Its totient is φ = 2749248.

The previous prime is 2774801. The next prime is 2774819. The reversal of 2774813 is 3184772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 806404 + 1968409 = 898^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774813 - 2⁸ = 2774557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2774813.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 12620 + ... + 12837.

It is an arithmetic number, because the mean of its divisors is an integer number (700095).

2^2774813 is an apocalyptic number.

It is an amenable number.

2774813 is a deficient number, since it is larger than the sum of its proper divisors (25567).

2774813 is a wasteful number, since it uses less digits than its factorization.

2774813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25566.

The product of its digits is 9408, while the sum is 32.

The square root of 2774813 is about 1665.7769958791. The cubic root of 2774813 is about 140.5220812717.

The spelling of 2774813 in words is "two million, seven hundred seventy-four thousand, eight hundred thirteen".