963997 has 4 divisors (see below), whose sum is σ = 967356. Its totient is φ = 960640.

The previous prime is 963979. The next prime is 964009. The reversal of 963997 is 799369.

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 527076 + 436921 = 726^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 963997 - 2¹⁹ = 439709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (963097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (241839).

2⁹⁶³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

963997 is a deficient number, since it is larger than the sum of its proper divisors (3359).

963997 is a wasteful number, since it uses less digits than its factorization.

963997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358.

The product of its digits is 91854, while the sum is 43.

The square root of 963997 is about 981.8334889379. The cubic root of 963997 is about 98.7852024258.

The spelling of 963997 in words is "nine hundred sixty-three thousand, nine hundred ninety-seven".