10640205 has 12 divisors (see below), whose sum is σ = 18443100. Its totient is φ = 5674752.

The previous prime is 10640173. The next prime is 10640207. The reversal of 10640205 is 50204601.

It is a happy number.

10640205 is a `hidden beast` number, since 1 + 0 + 640 + 20 + 5 = 666.

10640205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4076361 + 6563844 = 2019^2 + 2562^2 .

It is not a de Polignac number, because 10640205 - 2⁵ = 10640173 is a prime.

It is a super-2 number, since 2×10640205² = 226427924884050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118180 + ... + 118269.

It is an arithmetic number, because the mean of its divisors is an integer number (1536925).

Almost surely, 2^10640205 is an apocalyptic number.

10640205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10640205 is a deficient number, since it is larger than the sum of its proper divisors (7802895).

10640205 is a wasteful number, since it uses less digits than its factorization.

10640205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236460 (or 236457 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10640205 is about 3261.9327092998. The cubic root of 10640205 is about 219.9463023215.

Adding to 10640205 its reverse (50204601), we get a palindrome (60844806).

The spelling of 10640205 in words is "ten million, six hundred forty thousand, two hundred five".