997162543 has 8 divisors (see below), whose sum is σ = 1102891328. Its totient is φ = 895580064.

The previous prime is 997162513. The next prime is 997162589. The reversal of 997162543 is 345261799.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 997162543 - 2¹⁷ = 997031471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 997162493 and 997162502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997162513) 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, 1036071 + ... + 1037032.

It is an arithmetic number, because the mean of its divisors is an integer number (137861416).

Almost surely, 2^997162543 is an apocalyptic number.

997162543 is a deficient number, since it is larger than the sum of its proper divisors (105728785).

997162543 is a wasteful number, since it uses less digits than its factorization.

997162543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073153.

The product of its digits is 408240, while the sum is 46.

The square root of 997162543 is about 31577.8805970255. The cubic root of 997162543 is about 999.0532850136.

The spelling of 997162543 in words is "nine hundred ninety-seven million, one hundred sixty-two thousand, five hundred forty-three".