2745305 has 8 divisors (see below), whose sum is σ = 3348744. Its totient is φ = 2160000.

The previous prime is 2745287. The next prime is 2745307. The reversal of 2745305 is 5035472.

2745305 = T₂₆₉ + T₂₇₀ + ... + T₃₂₉.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 2679769 = 256^2 + 1637^2 .

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

It is not a de Polignac number, because 2745305 - 2⁸ = 2745049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745307) 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, 4196 + ... + 4805.

It is an arithmetic number, because the mean of its divisors is an integer number (418593).

2^2745305 is an apocalyptic number.

It is an amenable number.

2745305 is a deficient number, since it is larger than the sum of its proper divisors (603439).

2745305 is an equidigital number, since it uses as much as digits as its factorization.

2745305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2745305 is about 1656.8961946966. The cubic root of 2745305 is about 140.0221903601.

It can be divided in two parts, 2745 and 305, that multiplied together give a square (837225 = 915²).

The spelling of 2745305 in words is "two million, seven hundred forty-five thousand, three hundred five".