987965 has 24 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 677600.

The previous prime is 987941. The next prime is 987971. The reversal of 987965 is 569789.

It is not a de Polignac number, because 987965 - 2¹⁰ = 986941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13880 + ... + 13950.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2⁹⁸⁷⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

987965 is a deficient number, since it is larger than the sum of its proper divisors (390979).

987965 is a wasteful number, since it uses less digits than its factorization.

987965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 110 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 987965 is about 993.9642850727. The cubic root of 987965 is about 99.5972131390.

The spelling of 987965 in words is "nine hundred eighty-seven thousand, nine hundred sixty-five".