9665972 has 6 divisors (see below), whose sum is σ = 16915458. Its totient is φ = 4832984.

The previous prime is 9665969. The next prime is 9665983. The reversal of 9665972 is 2795669.

It can be written as a sum of positive squares in only one way, i.e., 8042896 + 1623076 = 2836^2 + 1274^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1208243 + ... + 1208250.

It is an arithmetic number, because the mean of its divisors is an integer number (2819243).

Almost surely, 2^9665972 is an apocalyptic number.

It is an amenable number.

9665972 is a deficient number, since it is larger than the sum of its proper divisors (7249486).

9665972 is a wasteful number, since it uses less digits than its factorization.

9665972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416497 (or 2416495 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 9665972 is about 3109.0146348964. The cubic root of 9665972 is about 213.0174480773.

The spelling of 9665972 in words is "nine million, six hundred sixty-five thousand, nine hundred seventy-two".