2745691 has 8 divisors (see below), whose sum is σ = 3059280. Its totient is φ = 2446752.

The previous prime is 2745661. The next prime is 2745697. The reversal of 2745691 is 1965472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2745691 - 2⁹ = 2745179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265 + ... + 4018.

It is an arithmetic number, because the mean of its divisors is an integer number (382410).

2^2745691 is an apocalyptic number.

2745691 is a deficient number, since it is larger than the sum of its proper divisors (313589).

2745691 is a wasteful number, since it uses less digits than its factorization.

2745691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325.

The product of its digits is 15120, while the sum is 34.

The square root of 2745691 is about 1657.0126734579. The cubic root of 2745691 is about 140.0287525979.

The spelling of 2745691 in words is "two million, seven hundred forty-five thousand, six hundred ninety-one".