2687745 has 16 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 1408704.

The previous prime is 2687723. The next prime is 2687747. The reversal of 2687745 is 5477862.

It is not a de Polignac number, because 2687745 - 2¹² = 2683649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2687747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634 + ... + 2403.

It is an arithmetic number, because the mean of its divisors is an integer number (273420).

2^2687745 is an apocalyptic number.

It is an amenable number.

2687745 is a deficient number, since it is larger than the sum of its proper divisors (1686975).

2687745 is a wasteful number, since it uses less digits than its factorization.

2687745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104.

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

The square root of 2687745 is about 1639.4343536720. The cubic root of 2687745 is about 139.0366688965.

The spelling of 2687745 in words is "two million, six hundred eighty-seven thousand, seven hundred forty-five".