2770666 has 4 divisors (see below), whose sum is σ = 4156002. Its totient is φ = 1385332.

The previous prime is 2770639. The next prime is 2770667. The reversal of 2770666 is 6660772.

2770666 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 can be written as a sum of positive squares in only one way, i.e., 1390041 + 1380625 = 1179^2 + 1175^2 .

It is not an unprimeable number, because it can be changed into a prime (2770667) 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, 692665 + ... + 692668.

2^2770666 is an apocalyptic number.

2770666 is a deficient number, since it is larger than the sum of its proper divisors (1385336).

2770666 is a wasteful number, since it uses less digits than its factorization.

2770666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385335.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 2770666 is about 1664.5317659931. The cubic root of 2770666 is about 140.4520422434.

It can be divided in two parts, 27706 and 66, that added together give a palindrome (27772).

The spelling of 2770666 in words is "two million, seven hundred seventy thousand, six hundred sixty-six".