987122583 has 6 divisors (see below), whose sum is σ = 1425843744. Its totient is φ = 658081716.

The previous prime is 987122573. The next prime is 987122611. The reversal of 987122583 is 385221789.

It is a happy number.

987122583 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 987122583 - 2⁵ = 987122551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987122573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54840135 + ... + 54840152.

It is an arithmetic number, because the mean of its divisors is an integer number (237640624).

Almost surely, 2^987122583 is an apocalyptic number.

987122583 is a deficient number, since it is larger than the sum of its proper divisors (438721161).

987122583 is a wasteful number, since it uses less digits than its factorization.

987122583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109680293 (or 109680290 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 987122583 is about 31418.5070141788. The cubic root of 987122583 is about 995.6889693885.

The spelling of 987122583 in words is "nine hundred eighty-seven million, one hundred twenty-two thousand, five hundred eighty-three".