2687563 has 4 divisors (see below), whose sum is σ = 2725488. Its totient is φ = 2649640.

The previous prime is 2687557. The next prime is 2687567. The reversal of 2687563 is 3657862.

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

It is a cyclic number.

It is not a de Polignac number, because 2687563 - 2¹³ = 2679371 is a prime.

It is a Duffinian number.

2687563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2687567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18856 + ... + 18997.

It is an arithmetic number, because the mean of its divisors is an integer number (681372).

2^2687563 is an apocalyptic number.

2687563 is a deficient number, since it is larger than the sum of its proper divisors (37925).

2687563 is an equidigital number, since it uses as much as digits as its factorization.

2687563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37924.

The product of its digits is 60480, while the sum is 37.

The square root of 2687563 is about 1639.3788457828. The cubic root of 2687563 is about 139.0335305476.

Subtracting 2687563 from its reverse (3657862), we obtain a cube (970299 = 99³).

The spelling of 2687563 in words is "two million, six hundred eighty-seven thousand, five hundred sixty-three".