2772566 has 4 divisors (see below), whose sum is σ = 4158852. Its totient is φ = 1386282.

The previous prime is 2772533. The next prime is 2772569. The reversal of 2772566 is 6652772.

It is a happy number.

2772566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693140 + ... + 693143.

It is an arithmetic number, because the mean of its divisors is an integer number (1039713).

2^2772566 is an apocalyptic number.

2772566 is a deficient number, since it is larger than the sum of its proper divisors (1386286).

2772566 is a wasteful number, since it uses less digits than its factorization.

2772566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386285.

The product of its digits is 35280, while the sum is 35.

The square root of 2772566 is about 1665.1023992536. The cubic root of 2772566 is about 140.4841401702.

The spelling of 2772566 in words is "two million, seven hundred seventy-two thousand, five hundred sixty-six".