9640945 has 16 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 7446400.

The previous prime is 9640919. The next prime is 9640957. The reversal of 9640945 is 5490469.

It is not a de Polignac number, because 9640945 - 2⁵ = 9640913 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26676 + ... + 27034.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^9640945 is an apocalyptic number.

It is an amenable number.

9640945 is a deficient number, since it is larger than the sum of its proper divisors (2334095).

9640945 is a wasteful number, since it uses less digits than its factorization.

9640945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 9640945 is about 3104.9871175256. The cubic root of 9640945 is about 212.8334419078.

It can be divided in two parts, 9640 and 945, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 9640945 in words is "nine million, six hundred forty thousand, nine hundred forty-five".