1087565 has 8 divisors (see below), whose sum is σ = 1310688. Its totient is φ = 866320.

The previous prime is 1087561. The next prime is 1087589. The reversal of 1087565 is 5657801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1087565 - 2² = 1087561 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 2460.

It is an arithmetic number, because the mean of its divisors is an integer number (163836).

2^1087565 is an apocalyptic number.

It is an amenable number.

1087565 is a deficient number, since it is larger than the sum of its proper divisors (223123).

1087565 is an equidigital number, since it uses as much as digits as its factorization.

1087565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1087565 is about 1042.8638453796. The cubic root of 1087565 is about 102.8375545995.

The spelling of 1087565 in words is "one million, eighty-seven thousand, five hundred sixty-five".