997593 has 8 divisors (see below), whose sum is σ = 1337856. Its totient is φ = 661200.

The previous prime is 997589. The next prime is 997597. The reversal of 997593 is 395799.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (997589) and next prime (997597).

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

It is not a de Polignac number, because 997593 - 2² = 997589 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (997597) 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, 298 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (167232).

2⁹⁹⁷⁵⁹³ is an apocalyptic number.

It is an amenable number.

997593 is a deficient number, since it is larger than the sum of its proper divisors (340263).

997593 is a wasteful number, since it uses less digits than its factorization.

997593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its digits is 76545, while the sum is 42.

The square root of 997593 is about 998.7957749210. The cubic root of 997593 is about 99.9197022066.

The spelling of 997593 in words is "nine hundred ninety-seven thousand, five hundred ninety-three".