887500981 has 4 divisors (see below), whose sum is σ = 911487532. Its totient is φ = 863514432.

The previous prime is 887500897. The next prime is 887500993. The reversal of 887500981 is 189005788.

887500981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 606636900 + 280864081 = 24630^2 + 16759^2 .

It is a cyclic number.

It is not a de Polignac number, because 887500981 - 2⁷ = 887500853 is a prime.

It is a super-2 number, since 2×887500981² = 1575315982551924722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887000981) 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, 11993220 + ... + 11993293.

It is an arithmetic number, because the mean of its divisors is an integer number (227871883).

Almost surely, 2^887500981 is an apocalyptic number.

It is an amenable number.

887500981 is a deficient number, since it is larger than the sum of its proper divisors (23986551).

887500981 is a wasteful number, since it uses less digits than its factorization.

887500981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23986550.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 887500981 is about 29790.9546842662. The cubic root of 887500981 is about 960.9990254678. Note that the first 3 decimals are identical.

The spelling of 887500981 in words is "eight hundred eighty-seven million, five hundred thousand, nine hundred eighty-one".