9971672 has 8 divisors (see below), whose sum is σ = 18696900. Its totient is φ = 4985832.

The previous prime is 9971653. The next prime is 9971681. The reversal of 9971672 is 2761799.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 623222 + ... + 623237.

Almost surely, 2^9971672 is an apocalyptic number.

It is an amenable number.

9971672 is a deficient number, since it is larger than the sum of its proper divisors (8725228).

9971672 is a wasteful number, since it uses less digits than its factorization.

9971672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246465 (or 1246461 counting only the distinct ones).

The product of its digits is 47628, while the sum is 41.

The square root of 9971672 is about 3157.7954335264. The cubic root of 9971672 is about 215.2398405161.

The spelling of 9971672 in words is "nine million, nine hundred seventy-one thousand, six hundred seventy-two".