1087565436 has 72 divisors (see below), whose sum is σ = 2843568000. Its totient is φ = 350115840.

The previous prime is 1087565407. The next prime is 1087565473. The reversal of 1087565436 is 6345657801.

1087565436 is a `hidden beast` number, since 1 + 0 + 87 + 565 + 4 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1087565391 and 1087565400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1036240 + ... + 1037288.

It is an arithmetic number, because the mean of its divisors is an integer number (39494000).

Almost surely, 2^1087565436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1087565436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421784000).

1087565436 is an abundant number, since it is smaller than the sum of its proper divisors (1756002564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1087565436 is a wasteful number, since it uses less digits than its factorization.

1087565436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 1087565436 is about 32978.2570188298. The cubic root of 1087565436 is about 1028.3756834185.

The spelling of 1087565436 in words is "one billion, eighty-seven million, five hundred sixty-five thousand, four hundred thirty-six".