2745686 has 4 divisors (see below), whose sum is σ = 4118532. Its totient is φ = 1372842.

The previous prime is 2745661. The next prime is 2745697. The reversal of 2745686 is 6865472.

It is a happy number.

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

It is a super-2 number, since 2×2745686² = 15077583221192, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686420 + ... + 686423.

It is an arithmetic number, because the mean of its divisors is an integer number (1029633).

2^2745686 is an apocalyptic number.

2745686 is a deficient number, since it is larger than the sum of its proper divisors (1372846).

2745686 is a wasteful number, since it uses less digits than its factorization.

2745686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372845.

The product of its digits is 80640, while the sum is 38.

The square root of 2745686 is about 1657.0111647180. The cubic root of 2745686 is about 140.0286675988.

The spelling of 2745686 in words is "two million, seven hundred forty-five thousand, six hundred eighty-six".