10990945 has 24 divisors (see below), whose sum is σ = 15517224. Its totient is φ = 7451136.

The previous prime is 10990939. The next prime is 10990963. The reversal of 10990945 is 54909901.

It can be written as a sum of positive squares in 4 ways, for example, as 74529 + 10916416 = 273^2 + 3304^2 .

It is not a de Polignac number, because 10990945 - 2³ = 10990937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27487 + ... + 27883.

It is an arithmetic number, because the mean of its divisors is an integer number (646551).

Almost surely, 2^10990945 is an apocalyptic number.

It is an amenable number.

10990945 is a deficient number, since it is larger than the sum of its proper divisors (4526279).

10990945 is a wasteful number, since it uses less digits than its factorization.

10990945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 10990945 is about 3315.2594166973. The cubic root of 10990945 is about 222.3369676387.

It can be divided in two parts, 10990 and 945, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 10990945 in words is "ten million, nine hundred ninety thousand, nine hundred forty-five".