997338568 has 8 divisors (see below), whose sum is σ = 1870009830. Its totient is φ = 498669280.

The previous prime is 997338533. The next prime is 997338569. The reversal of 997338568 is 865833799.

It can be written as a sum of positive squares in only one way, i.e., 937461924 + 59876644 = 30618^2 + 7738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (997338569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62333653 + ... + 62333668.

Almost surely, 2^997338568 is an apocalyptic number.

It is an amenable number.

997338568 is a deficient number, since it is larger than the sum of its proper divisors (872671262).

997338568 is a wasteful number, since it uses less digits than its factorization.

997338568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124667327 (or 124667323 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The square root of 997338568 is about 31580.6676306882. The cubic root of 997338568 is about 999.1120678098.

The spelling of 997338568 in words is "nine hundred ninety-seven million, three hundred thirty-eight thousand, five hundred sixty-eight".