9640905 has 32 divisors (see below), whose sum is σ = 16416000. Its totient is φ = 4822272.

The previous prime is 9640889. The next prime is 9640913. The reversal of 9640905 is 5090469.

It is a happy number.

9640905 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9640905 - 2⁴ = 9640889 is a prime.

It is a Curzon number.

9640905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15796 + ... + 16394.

It is an arithmetic number, because the mean of its divisors is an integer number (513000).

Almost surely, 2^9640905 is an apocalyptic number.

It is an amenable number.

9640905 is a deficient number, since it is larger than the sum of its proper divisors (6775095).

9640905 is a wasteful number, since it uses less digits than its factorization.

9640905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 9640905 is about 3104.9806762684. The cubic root of 9640905 is about 212.8331475608.

The spelling of 9640905 in words is "nine million, six hundred forty thousand, nine hundred five".