997490968 has 32 divisors (see below), whose sum is σ = 1977736320. Its totient is φ = 470880000.

The previous prime is 997490959. The next prime is 997490981. The reversal of 997490968 is 869094799.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 38883 + ... + 59218.

It is an arithmetic number, because the mean of its divisors is an integer number (61804260).

Almost surely, 2^997490968 is an apocalyptic number.

It is an amenable number.

997490968 is a deficient number, since it is larger than the sum of its proper divisors (980245352).

997490968 is a wasteful number, since it uses less digits than its factorization.

997490968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98179 (or 98175 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 997490968 is about 31583.0804070787. The cubic root of 997490968 is about 999.1629555521.

The spelling of 997490968 in words is "nine hundred ninety-seven million, four hundred ninety thousand, nine hundred sixty-eight".