1087564 has 12 divisors (see below), whose sum is σ = 1923544. Its totient is φ = 537984.

The previous prime is 1087561. The next prime is 1087589. The reversal of 1087564 is 4657801.

1087564 is nontrivially palindromic in base 8.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1087561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014 + ... + 1789.

2^1087564 is an apocalyptic number.

It is an amenable number.

1087564 is a deficient number, since it is larger than the sum of its proper divisors (835980).

1087564 is a wasteful number, since it uses less digits than its factorization.

1087564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1087564 is about 1042.8633659306. The cubic root of 1087564 is about 102.8375230803.

The spelling of 1087564 in words is "one million, eighty-seven thousand, five hundred sixty-four".