973663 has 4 divisors (see below), whose sum is σ = 992088. Its totient is φ = 955240.

The previous prime is 973657. The next prime is 973669. The reversal of 973663 is 366379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366379 = 13 ⋅28183.

It is an interprime number because it is at equal distance from previous prime (973657) and next prime (973669).

It is a cyclic number.

It is not a de Polignac number, because 973663 - 2⁵ = 973631 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 (973669) 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, 9133 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (248022).

2⁹⁷³⁶⁶³ is an apocalyptic number.

973663 is a deficient number, since it is larger than the sum of its proper divisors (18425).

973663 is a wasteful number, since it uses less digits than its factorization.

973663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18424.

The product of its digits is 20412, while the sum is 34.

The square root of 973663 is about 986.7436343853. The cubic root of 973663 is about 99.1142781294.

The spelling of 973663 in words is "nine hundred seventy-three thousand, six hundred sixty-three".