997586736 has 20 divisors (see below), whose sum is σ = 2577099192. Its totient is φ = 332528896.

The previous prime is 997586719. The next prime is 997586743. The reversal of 997586736 is 637685799.

It is a self number, because there is not a number n which added to its sum of digits gives 997586736.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10391481 + ... + 10391576.

Almost surely, 2^997586736 is an apocalyptic number.

It is an amenable number.

997586736 is an abundant number, since it is smaller than the sum of its proper divisors (1579512456).

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

997586736 is a wasteful number, since it uses less digits than its factorization.

997586736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20783068 (or 20783062 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 60.

The square root of 997586736 is about 31584.5964989265. The cubic root of 997586736 is about 999.1949307040.

The spelling of 997586736 in words is "nine hundred ninety-seven million, five hundred eighty-six thousand, seven hundred thirty-six".