2772665 has 12 divisors (see below), whose sum is σ = 3870756. Its totient is φ = 1901088.

The previous prime is 2772647. The next prime is 2772697. The reversal of 2772665 is 5662772.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2019241 + 753424 = 1421^2 + 868^2 .

It is not a de Polignac number, because 2772665 - 2⁸ = 2772409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5414 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (322563).

2^2772665 is an apocalyptic number.

It is an amenable number.

2772665 is a deficient number, since it is larger than the sum of its proper divisors (1098091).

2772665 is a wasteful number, since it uses less digits than its factorization.

2772665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11336 (or 11329 counting only the distinct ones).

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

The square root of 2772665 is about 1665.1321268896. The cubic root of 2772665 is about 140.4858122391.

The spelling of 2772665 in words is "two million, seven hundred seventy-two thousand, six hundred sixty-five".