10989761 has 4 divisors (see below), whose sum is σ = 10997124. Its totient is φ = 10982400.

The previous prime is 10989749. The next prime is 10989773. The reversal of 10989761 is 16798901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (10989749) and next prime (10989773).

It can be written as a sum of positive squares in 2 ways, for example, as 2689600 + 8300161 = 1640^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 10989761 - 2¹⁴ = 10973377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10989731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (2749281).

Almost surely, 2^10989761 is an apocalyptic number.

It is an amenable number.

10989761 is a deficient number, since it is larger than the sum of its proper divisors (7363).

10989761 is an equidigital number, since it uses as much as digits as its factorization.

10989761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 10989761 is about 3315.0808436598. The cubic root of 10989761 is about 222.3289835990.

The spelling of 10989761 in words is "ten million, nine hundred eighty-nine thousand, seven hundred sixty-one".