997699200 has 192 divisors, whose sum is σ = 3321364800. Its totient is φ = 263208960.

The previous prime is 997699181. The next prime is 997699217. The reversal of 997699200 is 2996799.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 988296 + ... + 989304.

It is an arithmetic number, because the mean of its divisors is an integer number (17298775).

Almost surely, 2^997699200 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 997699200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660682400).

997699200 is an abundant number, since it is smaller than the sum of its proper divisors (2323665600).

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

997699200 is a wasteful number, since it uses less digits than its factorization.

997699200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 997699200 is about 31586.3768102643. The cubic root of 997699200 is about 999.2324777269.

The spelling of 997699200 in words is "nine hundred ninety-seven million, six hundred ninety-nine thousand, two hundred".