987963 has 4 divisors (see below), whose sum is σ = 1317288. Its totient is φ = 658640.

The previous prime is 987941. The next prime is 987971. The reversal of 987963 is 369789.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987963 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (987913) 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, 164658 + ... + 164663.

It is an arithmetic number, because the mean of its divisors is an integer number (329322).

2⁹⁸⁷⁹⁶³ is an apocalyptic number.

987963 is a deficient number, since it is larger than the sum of its proper divisors (329325).

987963 is a wasteful number, since it uses less digits than its factorization.

987963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329324.

The product of its digits is 81648, while the sum is 42.

The square root of 987963 is about 993.9632789998. The cubic root of 987963 is about 99.5971459320.

The spelling of 987963 in words is "nine hundred eighty-seven thousand, nine hundred sixty-three".