10890745 has 4 divisors (see below), whose sum is σ = 13068900. Its totient is φ = 8712592.

The previous prime is 10890731. The next prime is 10890749. The reversal of 10890745 is 54709801.

It is a happy number.

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 1175056 + 9715689 = 1084^2 + 3117^2 .

It is a cyclic number.

It is not a de Polignac number, because 10890745 - 2⁵ = 10890713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10890745.

It is not an unprimeable number, because it can be changed into a prime (10890749) 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, 1089070 + ... + 1089079.

It is an arithmetic number, because the mean of its divisors is an integer number (3267225).

Almost surely, 2^10890745 is an apocalyptic number.

It is an amenable number.

10890745 is a deficient number, since it is larger than the sum of its proper divisors (2178155).

10890745 is an equidigital number, since it uses as much as digits as its factorization.

10890745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178154.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 10890745 is about 3300.1128768574. The cubic root of 10890745 is about 221.6592518924.

The spelling of 10890745 in words is "ten million, eight hundred ninety thousand, seven hundred forty-five".