801987 has 16 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 500192.

The previous prime is 801973. The next prime is 801989. The reversal of 801987 is 789108.

801987 is nontrivially palindromic in base 8.

801987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 801987 - 2⁷ = 801859 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (801989) 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, 3973 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁸⁰¹⁹⁸⁷ is an apocalyptic number.

801987 is a deficient number, since it is larger than the sum of its proper divisors (338493).

801987 is a wasteful number, since it uses less digits than its factorization.

801987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 801987 is about 895.5372689062. The cubic root of 801987 is about 92.9085701038.

The spelling of 801987 in words is "eight hundred one thousand, nine hundred eighty-seven".