9640145 has 4 divisors (see below), whose sum is σ = 11568180. Its totient is φ = 7712112.

The previous prime is 9640129. The next prime is 9640171. The reversal of 9640145 is 5410469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410469 = 101 ⋅53569.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 6385729 = 1804^2 + 2527^2 .

It is a cyclic number.

It is not a de Polignac number, because 9640145 - 2⁴ = 9640129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964010 + ... + 964019.

It is an arithmetic number, because the mean of its divisors is an integer number (2892045).

Almost surely, 2^9640145 is an apocalyptic number.

It is an amenable number.

9640145 is a deficient number, since it is larger than the sum of its proper divisors (1928035).

9640145 is a wasteful number, since it uses less digits than its factorization.

9640145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928034.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 9640145 is about 3104.8582898419. The cubic root of 9640145 is about 212.8275548132.

The spelling of 9640145 in words is "nine million, six hundred forty thousand, one hundred forty-five".