9971776 has 14 divisors (see below), whose sum is σ = 19787870. Its totient is φ = 4985856.

The previous prime is 9971761. The next prime is 9971779. The reversal of 9971776 is 6771799.

It can be written as a sum of positive squares in only one way, i.e., 5645376 + 4326400 = 2376^2 + 2080^2 .

It is not an unprimeable number, because it can be changed into a prime (9971779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77841 + ... + 77968.

Almost surely, 2^9971776 is an apocalyptic number.

It is an amenable number.

9971776 is a deficient number, since it is larger than the sum of its proper divisors (9816094).

9971776 is a wasteful number, since it uses less digits than its factorization.

9971776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155821 (or 155811 counting only the distinct ones).

The product of its digits is 166698, while the sum is 46.

The square root of 9971776 is about 3157.8119006679. The cubic root of 9971776 is about 215.2405887980.

The spelling of 9971776 in words is "nine million, nine hundred seventy-one thousand, seven hundred seventy-six".