2705749 has 4 divisors (see below), whose sum is σ = 2715660. Its totient is φ = 2695840.

The previous prime is 2705741. The next prime is 2705761. The reversal of 2705749 is 9475072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2380849 + 324900 = 1543^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2705749 - 2³ = 2705741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4534 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (678915).

2^2705749 is an apocalyptic number.

It is an amenable number.

2705749 is a deficient number, since it is larger than the sum of its proper divisors (9911).

2705749 is an equidigital number, since it uses as much as digits as its factorization.

2705749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9910.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2705749 is about 1644.9161072833. The cubic root of 2705749 is about 139.3464264053.

The spelling of 2705749 in words is "two million, seven hundred five thousand, seven hundred forty-nine".