9971668 has 24 divisors (see below), whose sum is σ = 20045312. Its totient is φ = 4251744.

The previous prime is 9971653. The next prime is 9971681. The reversal of 9971668 is 8661799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5446 + ... + 7042.

Almost surely, 2^9971668 is an apocalyptic number.

It is an amenable number.

9971668 is an abundant number, since it is smaller than the sum of its proper divisors (10073644).

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

9971668 is a wasteful number, since it uses less digits than its factorization.

9971668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1829 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 9971668 is about 3157.7948001731. The cubic root of 9971668 is about 215.2398117359.

The spelling of 9971668 in words is "nine million, nine hundred seventy-one thousand, six hundred sixty-eight".