987277 has 4 divisors (see below), whose sum is σ = 998460. Its totient is φ = 976096.

The previous prime is 987251. The next prime is 987293. The reversal of 987277 is 772789.

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 509796 + 477481 = 714^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 987277 - 2¹⁵ = 954509 is a prime.

It is a Duffinian number.

987277 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987227) 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, 5458 + ... + 5635.

It is an arithmetic number, because the mean of its divisors is an integer number (249615).

2⁹⁸⁷²⁷⁷ is an apocalyptic number.

It is an amenable number.

987277 is a deficient number, since it is larger than the sum of its proper divisors (11183).

987277 is a wasteful number, since it uses less digits than its factorization.

987277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11182.

The product of its digits is 49392, while the sum is 40.

The square root of 987277 is about 993.6181359053. The cubic root of 987277 is about 99.5740885699.

The spelling of 987277 in words is "nine hundred eighty-seven thousand, two hundred seventy-seven".