997075008 has 280 divisors, whose sum is σ = 3186501120. Its totient is φ = 307307520.

The previous prime is 997074997. The next prime is 997075021. The reversal of 997075008 is 800570799.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5220193 + ... + 5220383.

Almost surely, 2^997075008 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 997075008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593250560).

997075008 is an abundant number, since it is smaller than the sum of its proper divisors (2189426112).

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

997075008 is a wasteful number, since it uses less digits than its factorization.

997075008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 997075008 is about 31576.4945489521. The cubic root of 997075008 is about 999.0240504991.

The spelling of 997075008 in words is "nine hundred ninety-seven million, seventy-five thousand, eight".