997996008 has 48 divisors (see below), whose sum is σ = 2514970080. Its totient is φ = 330010656.

The previous prime is 997996007. The next prime is 997996039. The reversal of 997996008 is 800699799.

It is not an unprimeable number, because it can be changed into a prime (997996001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999743 + ... + 2000241.

It is an arithmetic number, because the mean of its divisors is an integer number (52395210).

Almost surely, 2^997996008 is an apocalyptic number.

It is an amenable number.

997996008 is an abundant number, since it is smaller than the sum of its proper divisors (1516974072).

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

997996008 is a wasteful number, since it uses less digits than its factorization.

997996008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 997996008 is about 31591.0748155235. The cubic root of 997996008 is about 999.3315559488.

The spelling of 997996008 in words is "nine hundred ninety-seven million, nine hundred ninety-six thousand, eight".