9971608 has 8 divisors (see below), whose sum is σ = 18696780. Its totient is φ = 4985800.

The previous prime is 9971603. The next prime is 9971641. The reversal of 9971608 is 8061799.

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

It is a super-2 number, since 2×9971608² = 198865932211328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623218 + ... + 623233.

Almost surely, 2^9971608 is an apocalyptic number.

It is an amenable number.

9971608 is a deficient number, since it is larger than the sum of its proper divisors (8725172).

9971608 is a wasteful number, since it uses less digits than its factorization.

9971608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246457 (or 1246453 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9971608 is about 3157.7852998581. The cubic root of 9971608 is about 215.2393800323.

The spelling of 9971608 in words is "nine million, nine hundred seventy-one thousand, six hundred eight".