2745669 has 4 divisors (see below), whose sum is σ = 3660896. Its totient is φ = 1830444.

The previous prime is 2745661. The next prime is 2745697. The reversal of 2745669 is 9665472.

2745669 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2745669 - 2³ = 2745661 is a prime.

It is a super-2 number, since 2×2745669² = 15077396515122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 7 + 4¹⁰ + 5⁵ + 6⁵ + 6⁸ + 9⁴ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745661) 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 in 3 ways as a sum of consecutive naturals, for example, 457609 + ... + 457614.

It is an arithmetic number, because the mean of its divisors is an integer number (915224).

2^2745669 is an apocalyptic number.

It is an amenable number.

2745669 is a deficient number, since it is larger than the sum of its proper divisors (915227).

2745669 is an equidigital number, since it uses as much as digits as its factorization.

2745669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915226.

The product of its digits is 90720, while the sum is 39.

The square root of 2745669 is about 1657.0060349920. The cubic root of 2745669 is about 140.0283786009.

The spelling of 2745669 in words is "two million, seven hundred forty-five thousand, six hundred sixty-nine".