9640505 has 36 divisors (see below), whose sum is σ = 14333220. Its totient is φ = 6205248.

The previous prime is 9640489. The next prime is 9640507. The reversal of 9640505 is 5050469.

It can be written as a sum of positive squares in 2 ways, for example, as 5112121 + 4528384 = 2261^2 + 2128^2 .

It is not a de Polignac number, because 9640505 - 2⁴ = 9640489 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9640507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88391 + ... + 88499.

It is an arithmetic number, because the mean of its divisors is an integer number (398145).

Almost surely, 2^9640505 is an apocalyptic number.

9640505 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9640505 is a deficient number, since it is larger than the sum of its proper divisors (4692715).

9640505 is a wasteful number, since it uses less digits than its factorization.

9640505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 9640505 is about 3104.9162629610. The cubic root of 9640505 is about 212.8302040461.

The spelling of 9640505 in words is "nine million, six hundred forty thousand, five hundred five".