997235008 has 56 divisors (see below), whose sum is σ = 2467197504. Its totient is φ = 388531200.

The previous prime is 997235003. The next prime is 997235009. The reversal of 997235008 is 800532799.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×997235008² = 1988955322361520128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997235003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 96253 + ... + 106108.

Almost surely, 2^997235008 is an apocalyptic number.

It is an amenable number.

997235008 is an abundant number, since it is smaller than the sum of its proper divisors (1469962496).

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

997235008 is a wasteful number, since it uses less digits than its factorization.

997235008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202391 (or 202381 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 997235008 is about 31579.0279774410. The cubic root of 997235008 is about 999.0774852282.

The spelling of 997235008 in words is "nine hundred ninety-seven million, two hundred thirty-five thousand, eight".