963987 has 4 divisors (see below), whose sum is σ = 1285320. Its totient is φ = 642656.

The previous prime is 963979. The next prime is 964009. The reversal of 963987 is 789369.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 963987 - 2³ = 963979 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 963987.

It is not an unprimeable number, because it can be changed into a prime (963187) 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, 160662 + ... + 160667.

It is an arithmetic number, because the mean of its divisors is an integer number (321330).

2⁹⁶³⁹⁸⁷ is an apocalyptic number.

963987 is a deficient number, since it is larger than the sum of its proper divisors (321333).

963987 is a wasteful number, since it uses less digits than its factorization.

963987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321332.

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

The square root of 963987 is about 981.8283964115. The cubic root of 963987 is about 98.7848608426.

The spelling of 963987 in words is "nine hundred sixty-three thousand, nine hundred eighty-seven".