997263 has 6 divisors (see below), whose sum is σ = 1440504. Its totient is φ = 664836.

The previous prime is 997259. The next prime is 997267. The reversal of 997263 is 362799.

It is an interprime number because it is at equal distance from previous prime (997259) and next prime (997267).

It is not a de Polignac number, because 997263 - 2² = 997259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55395 + ... + 55412.

It is an arithmetic number, because the mean of its divisors is an integer number (240084).

2⁹⁹⁷²⁶³ is an apocalyptic number.

997263 is a deficient number, since it is larger than the sum of its proper divisors (443241).

997263 is a wasteful number, since it uses less digits than its factorization.

997263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110813 (or 110810 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 997263 is about 998.6305623202. The cubic root of 997263 is about 99.9086833047.

The spelling of 997263 in words is "nine hundred ninety-seven thousand, two hundred sixty-three".