10640155 has 4 divisors (see below), whose sum is σ = 12768192. Its totient is φ = 8512120.

The previous prime is 10640143. The next prime is 10640159. The reversal of 10640155 is 55104601.

10640155 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10640155 - 2²³ = 2251547 is a prime.

It is a super-2 number, since 2×10640155² = 226425796848050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10640159) 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, 1064011 + ... + 1064020.

It is an arithmetic number, because the mean of its divisors is an integer number (3192048).

Almost surely, 2^10640155 is an apocalyptic number.

10640155 is a deficient number, since it is larger than the sum of its proper divisors (2128037).

10640155 is an equidigital number, since it uses as much as digits as its factorization.

10640155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128036.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 10640155 is about 3261.9250451229. The cubic root of 10640155 is about 219.9459578002.

Adding to 10640155 its reverse (55104601), we get a palindrome (65744756).

The spelling of 10640155 in words is "ten million, six hundred forty thousand, one hundred fifty-five".