10640885 has 4 divisors (see below), whose sum is σ = 12769068. Its totient is φ = 8512704.

The previous prime is 10640857. The next prime is 10640887. The reversal of 10640885 is 58804601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4990756 + 5650129 = 2234^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 10640885 - 2⁶ = 10640821 is a prime.

It is a super-2 number, since 2×10640885² = 226456867166450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064084 + ... + 1064093.

It is an arithmetic number, because the mean of its divisors is an integer number (3192267).

Almost surely, 2^10640885 is an apocalyptic number.

It is an amenable number.

10640885 is a deficient number, since it is larger than the sum of its proper divisors (2128183).

10640885 is an equidigital number, since it uses as much as digits as its factorization.

10640885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128182.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 10640885 is about 3262.0369403181. The cubic root of 10640885 is about 219.9509877043.

The spelling of 10640885 in words is "ten million, six hundred forty thousand, eight hundred eighty-five".