987265 has 4 divisors (see below), whose sum is σ = 1184724. Its totient is φ = 789808.

The previous prime is 987251. The next prime is 987293. The reversal of 987265 is 562789.

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 288369 + 698896 = 537^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 987265 - 2¹⁵ = 954497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98722 + ... + 98731.

It is an arithmetic number, because the mean of its divisors is an integer number (296181).

2⁹⁸⁷²⁶⁵ is an apocalyptic number.

It is an amenable number.

987265 is a deficient number, since it is larger than the sum of its proper divisors (197459).

987265 is a wasteful number, since it uses less digits than its factorization.

987265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197458.

The product of its digits is 30240, while the sum is 37.

The square root of 987265 is about 993.6120973499. The cubic root of 987265 is about 99.5736851391.

The spelling of 987265 in words is "nine hundred eighty-seven thousand, two hundred sixty-five".