1087881 has 16 divisors (see below), whose sum is σ = 1560384. Its totient is φ = 671744.

The previous prime is 1087873. The next prime is 1087897. The reversal of 1087881 is 1887801.

It is a cyclic number.

It is not a de Polignac number, because 1087881 - 2³ = 1087873 is a prime.

It is a super-2 number, since 2×1087881² = 2366970140322, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105 + ... + 4361.

It is an arithmetic number, because the mean of its divisors is an integer number (97524).

2^1087881 is an apocalyptic number.

It is an amenable number.

1087881 is a deficient number, since it is larger than the sum of its proper divisors (472503).

1087881 is a wasteful number, since it uses less digits than its factorization.

1087881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 1087881 is about 1043.0153402515. The cubic root of 1087881 is about 102.8475137040.

The spelling of 1087881 in words is "one million, eighty-seven thousand, eight hundred eighty-one".