2774861 has 4 divisors (see below), whose sum is σ = 2788224. Its totient is φ = 2761500.

The previous prime is 2774851. The next prime is 2774867. The reversal of 2774861 is 1684772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2774861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2774867) 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, 6365 + ... + 6786.

It is an arithmetic number, because the mean of its divisors is an integer number (697056).

2^2774861 is an apocalyptic number.

It is an amenable number.

2774861 is a deficient number, since it is larger than the sum of its proper divisors (13363).

2774861 is a wasteful number, since it uses less digits than its factorization.

2774861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362.

The product of its digits is 18816, while the sum is 35.

The square root of 2774861 is about 1665.7914035077. The cubic root of 2774861 is about 140.5228915391.

The spelling of 2774861 in words is "two million, seven hundred seventy-four thousand, eight hundred sixty-one".