969987 has 8 divisors (see below), whose sum is σ = 1298704. Its totient is φ = 643968.

The previous prime is 969977. The next prime is 969989. The reversal of 969987 is 789969.

It is a happy number.

969987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 969987 - 2⁶ = 969923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (969989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (162338).

2⁹⁶⁹⁹⁸⁷ is an apocalyptic number.

969987 is a deficient number, since it is larger than the sum of its proper divisors (328717).

969987 is a wasteful number, since it uses less digits than its factorization.

969987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349.

The product of its digits is 244944, while the sum is 48.

The square root of 969987 is about 984.8791804074. The cubic root of 969987 is about 98.9893877003.

It can be divided in two parts, 9 and 69987, that added together give a palindrome (69996).

The spelling of 969987 in words is "nine hundred sixty-nine thousand, nine hundred eighty-seven".