997675392 has 256 divisors, whose sum is σ = 3172608000. Its totient is φ = 271884288.

The previous prime is 997675391. The next prime is 997675403. The reversal of 997675392 is 293576799.

997675392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997675391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6695734 + ... + 6695882.

It is an arithmetic number, because the mean of its divisors is an integer number (12393000).

Almost surely, 2^997675392 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 997675392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586304000).

997675392 is an abundant number, since it is smaller than the sum of its proper divisors (2174932608).

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

997675392 is a wasteful number, since it uses less digits than its factorization.

997675392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 261 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 57.

The square root of 997675392 is about 31585.9999366808. Note that the first 4 decimals coincide. The cubic root of 997675392 is about 999.2245294676.

The spelling of 997675392 in words is "nine hundred ninety-seven million, six hundred seventy-five thousand, three hundred ninety-two".