2745387 has 8 divisors (see below), whose sum is σ = 4067280. Its totient is φ = 1830240.

The previous prime is 2745377. The next prime is 2745397. The reversal of 2745387 is 7835472.

2745387 is a `hidden beast` number, since 274 + 5 + 387 = 666.

2745387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2745377) and next prime (2745397).

It is not a de Polignac number, because 2745387 - 2⁴ = 2745371 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50814 + ... + 50867.

It is an arithmetic number, because the mean of its divisors is an integer number (508410).

2^2745387 is an apocalyptic number.

2745387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2745387 is a deficient number, since it is larger than the sum of its proper divisors (1321893).

2745387 is a wasteful number, since it uses less digits than its factorization.

2745387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101690 (or 101684 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2745387 is about 1656.9209395744. The cubic root of 2745387 is about 140.0235844621.

It can be divided in two parts, 27 and 45387, that multiplied together give a square (1225449 = 1107²).

The spelling of 2745387 in words is "two million, seven hundred forty-five thousand, three hundred eighty-seven".