997508768 has 12 divisors (see below), whose sum is σ = 1963845450. Its totient is φ = 498754368.

The previous prime is 997508723. The next prime is 997508773. The reversal of 997508768 is 867805799.

997508768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 833361424 + 164147344 = 28868^2 + 12812^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15586043 + ... + 15586106.

Almost surely, 2^997508768 is an apocalyptic number.

It is an amenable number.

997508768 is a deficient number, since it is larger than the sum of its proper divisors (966336682).

997508768 is a wasteful number, since it uses less digits than its factorization.

997508768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31172159 (or 31172151 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 59.

The square root of 997508768 is about 31583.3622022735. The cubic root of 997508768 is about 999.1688987955.

The spelling of 997508768 in words is "nine hundred ninety-seven million, five hundred eight thousand, seven hundred sixty-eight".