997447600 has 60 divisors (see below), whose sum is σ = 2435712160. Its totient is φ = 392428800.

The previous prime is 997447553. The next prime is 997447609. The reversal of 997447600 is 6744799.

It is not an unprimeable number, because it can be changed into a prime (997447609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3961 + ... + 44839.

Almost surely, 2^997447600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997447600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217856080).

997447600 is an abundant number, since it is smaller than the sum of its proper divisors (1438264560).

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

997447600 is a wasteful number, since it uses less digits than its factorization.

997447600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40958 (or 40947 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 997447600 is about 31582.3938294740. The cubic root of 997447600 is about 999.1484751112.

The spelling of 997447600 in words is "nine hundred ninety-seven million, four hundred forty-seven thousand, six hundred".