2745687 has 16 divisors (see below), whose sum is σ = 4430592. Its totient is φ = 1476480.

The previous prime is 2745661. The next prime is 2745697. The reversal of 2745687 is 7865472.

It is not a de Polignac number, because 2745687 - 2¹⁴ = 2729303 is a prime.

It is a d-powerful number, because it can be written as 2²⁰ + 7³ + 4⁴ + 5² + 6⁸ + 8² + 7⁵ .

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3489 + ... + 4202.

It is an arithmetic number, because the mean of its divisors is an integer number (276912).

2^2745687 is an apocalyptic number.

2745687 is a deficient number, since it is larger than the sum of its proper divisors (1684905).

2745687 is a wasteful number, since it uses less digits than its factorization.

2745687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718.

The product of its digits is 94080, while the sum is 39.

The square root of 2745687 is about 1657.0114664661. The cubic root of 2745687 is about 140.0286845986.

The spelling of 2745687 in words is "two million, seven hundred forty-five thousand, six hundred eighty-seven".