9640961 has 16 divisors (see below), whose sum is σ = 11178240. Its totient is φ = 8223120.

The previous prime is 9640957. The next prime is 9640973. The reversal of 9640961 is 1690469.

It is a cyclic number.

It is not a de Polignac number, because 9640961 - 2² = 9640957 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9640991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33926 + ... + 34208.

It is an arithmetic number, because the mean of its divisors is an integer number (698640).

Almost surely, 2^9640961 is an apocalyptic number.

9640961 is the 1793-rd octagonal number.

It is an amenable number.

9640961 is a deficient number, since it is larger than the sum of its proper divisors (1537279).

9640961 is a wasteful number, since it uses less digits than its factorization.

9640961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 9640961 is about 3104.9896940248. The cubic root of 9640961 is about 212.8335596463.

It can be divided in two parts, 9640 and 961, that added together give a palindrome (10601).

The spelling of 9640961 in words is "nine million, six hundred forty thousand, nine hundred sixty-one".