99997968 has 40 divisors (see below), whose sum is σ = 295233088. Its totient is φ = 28570752.

The previous prime is 99997957. The next prime is 99997973. The reversal of 99997968 is 86979999.

It is a junction number, because it is equal to n+sod(n) for n = 99997899 and 99997908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148471 + ... + 149142.

Almost surely, 2^99997968 is an apocalyptic number.

It is an amenable number.

99997968 is an abundant number, since it is smaller than the sum of its proper divisors (195235120).

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

99997968 is a wasteful number, since it uses less digits than its factorization.

99997968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297631 (or 297625 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 66.

The square root of 99997968 is about 9999.8983994839. The cubic root of 99997968 is about 464.1557394371.

The spelling of 99997968 in words is "ninety-nine million, nine hundred ninety-seven thousand, nine hundred sixty-eight".