997703 has 4 divisors (see below), whose sum is σ = 1140240. Its totient is φ = 855168.

The previous prime is 997699. The next prime is 997727. The reversal of 997703 is 307799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307799 = 31 ⋅9929.

It is a cyclic number.

It is not a de Polignac number, because 997703 - 2² = 997699 is a prime.

It is a super-2 number, since 2×997703² = 1990822552418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997783) 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, 71258 + ... + 71271.

It is an arithmetic number, because the mean of its divisors is an integer number (285060).

2⁹⁹⁷⁷⁰³ is an apocalyptic number.

997703 is a deficient number, since it is larger than the sum of its proper divisors (142537).

997703 is a wasteful number, since it uses less digits than its factorization.

997703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142536.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 997703 is about 998.8508397153. The cubic root of 997703 is about 99.9233746339.

The spelling of 997703 in words is "nine hundred ninety-seven thousand, seven hundred three".