997266843 has 8 divisors (see below), whose sum is σ = 1477432400. Its totient is φ = 664844544.

The previous prime is 997266841. The next prime is 997266847. The reversal of 997266843 is 348662799.

It is a happy number.

It is not a de Polignac number, because 997266843 - 2¹ = 997266841 is a prime.

It is a super-2 number, since 2×997266843² = 1989082312294373298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997266843.

It is not an unprimeable number, because it can be changed into a prime (997266841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18467878 + ... + 18467931.

It is an arithmetic number, because the mean of its divisors is an integer number (184679050).

Almost surely, 2^997266843 is an apocalyptic number.

997266843 is a deficient number, since it is larger than the sum of its proper divisors (480165557).

997266843 is a wasteful number, since it uses less digits than its factorization.

997266843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36935818 (or 36935812 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 997266843 is about 31579.5320262983. The cubic root of 997266843 is about 999.0881163877.

The spelling of 997266843 in words is "nine hundred ninety-seven million, two hundred sixty-six thousand, eight hundred forty-three".