987090 has 32 divisors (see below), whose sum is σ = 2552256. Its totient is φ = 242880.

The previous prime is 987089. The next prime is 987097. The reversal of 987090 is 90789.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (987097) 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, 876 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (79758).

2⁹⁸⁷⁰⁹⁰ is an apocalyptic number.

987090 is an abundant number, since it is smaller than the sum of its proper divisors (1565166).

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

987090 is a wasteful number, since it uses less digits than its factorization.

987090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 987090 is about 993.5240309122. The cubic root of 987090 is about 99.5678014015.

The spelling of 987090 in words is "nine hundred eighty-seven thousand, ninety".