997345660 has 12 divisors (see below), whose sum is σ = 2094425928. Its totient is φ = 398938256.

The previous prime is 997345651. The next prime is 997345667. The reversal of 997345660 is 66543799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997345667) 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 3 ways as a sum of consecutive naturals, for example, 24933622 + ... + 24933661.

It is an arithmetic number, because the mean of its divisors is an integer number (174535494).

Almost surely, 2^997345660 is an apocalyptic number.

It is an amenable number.

997345660 is an abundant number, since it is smaller than the sum of its proper divisors (1097080268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997345660 is a wasteful number, since it uses less digits than its factorization.

997345660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49867292 (or 49867290 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 997345660 is about 31580.7799143720. The cubic root of 997345660 is about 999.1144360079.

The spelling of 997345660 in words is "nine hundred ninety-seven million, three hundred forty-five thousand, six hundred sixty".