973997 has 4 divisors (see below), whose sum is σ = 1025280. Its totient is φ = 922716.

The previous prime is 973957. The next prime is 974003. The reversal of 973997 is 799379.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799379 = 7 ⋅114197.

It is a de Polignac number, because none of the positive numbers 2^k-973997 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973957) 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, 25613 + ... + 25650.

It is an arithmetic number, because the mean of its divisors is an integer number (256320).

2⁹⁷³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

973997 is a deficient number, since it is larger than the sum of its proper divisors (51283).

973997 is a wasteful number, since it uses less digits than its factorization.

973997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51282.

The product of its digits is 107163, while the sum is 44.

The square root of 973997 is about 986.9128634282. The cubic root of 973997 is about 99.1256100394.

The spelling of 973997 in words is "nine hundred seventy-three thousand, nine hundred ninety-seven".