1087563 has 4 divisors (see below), whose sum is σ = 1450088. Its totient is φ = 725040.

The previous prime is 1087561. The next prime is 1087589. The reversal of 1087563 is 3657801.

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

It is not a de Polignac number, because 1087563 - 2¹ = 1087561 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1087563.

It is not an unprimeable number, because it can be changed into a prime (1087561) 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, 181258 + ... + 181263.

It is an arithmetic number, because the mean of its divisors is an integer number (362522).

2^1087563 is an apocalyptic number.

1087563 is a deficient number, since it is larger than the sum of its proper divisors (362525).

1087563 is an equidigital number, since it uses as much as digits as its factorization.

1087563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362524.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1087563 is about 1042.8628864812. The cubic root of 1087563 is about 102.8374915610.

The spelling of 1087563 in words is "one million, eighty-seven thousand, five hundred sixty-three".