9965888 has 14 divisors (see below), whose sum is σ = 19776186. Its totient is φ = 4982912.

The previous prime is 9965881. The next prime is 9965903. The reversal of 9965888 is 8885699.

It can be written as a sum of positive squares in only one way, i.e., 6310144 + 3655744 = 2512^2 + 1912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9965881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77795 + ... + 77922.

Almost surely, 2^9965888 is an apocalyptic number.

It is an amenable number.

9965888 is a deficient number, since it is larger than the sum of its proper divisors (9810298).

9965888 is a wasteful number, since it uses less digits than its factorization.

9965888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155729 (or 155719 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 9965888 is about 3156.8794718836. The cubic root of 9965888 is about 215.1982163356.

The spelling of 9965888 in words is "nine million, nine hundred sixty-five thousand, eight hundred eighty-eight".