1973663 has 8 divisors (see below), whose sum is σ = 2098800. Its totient is φ = 1850688.

The previous prime is 1973651. The next prime is 1973669. The reversal of 1973663 is 3663791.

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

It is a cyclic number.

It is not a de Polignac number, because 1973663 - 2⁸ = 1973407 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 (1973669) 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, 1595 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (262350).

2^1973663 is an apocalyptic number.

1973663 is a deficient number, since it is larger than the sum of its proper divisors (125137).

1973663 is a wasteful number, since it uses less digits than its factorization.

1973663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 20412, while the sum is 35.

The square root of 1973663 is about 1404.8711684706. The cubic root of 1973663 is about 125.4366171481.

The spelling of 1973663 in words is "one million, nine hundred seventy-three thousand, six hundred sixty-three".