997000748597 has 6 divisors (see below), whose sum is σ = 1159776381078. Its totient is φ = 854572070184.

The previous prime is 997000748563. The next prime is 997000748629. The reversal of 997000748597 is 795847000799.

It can be written as a sum of positive squares in only one way, i.e., 940296756721 + 56703991876 = 969689^2 + 238126^2 .

It is not a de Polignac number, because 997000748597 - 2²² = 996996554293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997000742597) 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 5 ways as a sum of consecutive naturals, for example, 10173476978 + ... + 10173477075.

It is an arithmetic number, because the mean of its divisors is an integer number (193296063513).

Almost surely, 2^997000748597 is an apocalyptic number.

It is an amenable number.

997000748597 is a deficient number, since it is larger than the sum of its proper divisors (162775632481).

997000748597 is a wasteful number, since it uses less digits than its factorization.

997000748597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346954067 (or 20346954060 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 997000748597 in words is "nine hundred ninety-seven billion, seven hundred forty-eight thousand, five hundred ninety-seven".