10664505 has 24 divisors (see below), whose sum is σ = 18574920. Its totient is φ = 5660160.

The previous prime is 10664503. The next prime is 10664513. The reversal of 10664505 is 50546601.

It is a happy number.

10664505 is a `hidden beast` number, since 10 + 6 + 645 + 0 + 5 = 666.

10664505 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 4 ways, for example, as 147456 + 10517049 = 384^2 + 3243^2 .

It is not a de Polignac number, because 10664505 - 2¹ = 10664503 is a prime.

It is a super-2 number, since 2×10664505² = 227463333790050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10664503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11665 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^10664505 is an apocalyptic number.

10664505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10664505 is a deficient number, since it is larger than the sum of its proper divisors (7910415).

10664505 is a wasteful number, since it uses less digits than its factorization.

10664505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 10664505 is about 3265.6553706722. The cubic root of 10664505 is about 220.1136121174.

The spelling of 10664505 in words is "ten million, six hundred sixty-four thousand, five hundred five".