2745603 has 32 divisors (see below), whose sum is σ = 4736000. Its totient is φ = 1539648.

The previous prime is 2745581. The next prime is 2745607. The reversal of 2745603 is 3065472.

It is a happy number.

It is not a de Polignac number, because 2745603 - 2⁵ = 2745571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam 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 (2745607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13698 + ... + 13896.

It is an arithmetic number, because the mean of its divisors is an integer number (148000).

2^2745603 is an apocalyptic number.

2745603 is a deficient number, since it is larger than the sum of its proper divisors (1990397).

2745603 is a wasteful number, since it uses less digits than its factorization.

2745603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2745603 is about 1656.9861194349. The cubic root of 2745603 is about 140.0272565978.

The spelling of 2745603 in words is "two million, seven hundred forty-five thousand, six hundred three".