2740666 has 12 divisors (see below), whose sum is σ = 4181742. Its totient is φ = 1347104.

The previous prime is 2740649. The next prime is 2740667. The reversal of 2740666 is 6660472.

It can be written as a sum of positive squares in 3 ways, for example, as 2146225 + 594441 = 1465^2 + 771^2 .

It is a super-2 number, since 2×2740666² = 15022500247112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2740667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15756 + ... + 15928.

2^2740666 is an apocalyptic number.

2740666 is a deficient number, since it is larger than the sum of its proper divisors (1441076).

2740666 is an equidigital number, since it uses as much as digits as its factorization.

2740666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 2740666 is about 1655.4956961587. The cubic root of 2740666 is about 139.9432763402.

It can be divided in two parts, 27406 and 66, that added together give a palindrome (27472).

The spelling of 2740666 in words is "two million, seven hundred forty thousand, six hundred sixty-six".