10766561 has 8 divisors (see below), whose sum is σ = 11785704. Its totient is φ = 9774720.

The previous prime is 10766557. The next prime is 10766573. The reversal of 10766561 is 16566701.

It can be written as a sum of positive squares in 4 ways, for example, as 398161 + 10368400 = 631^2 + 3220^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10766561 - 2² = 10766557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10766531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5996 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (1473213).

Almost surely, 2^10766561 is an apocalyptic number.

It is an amenable number.

10766561 is a deficient number, since it is larger than the sum of its proper divisors (1019143).

10766561 is a wasteful number, since it uses less digits than its factorization.

10766561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13651.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 10766561 is about 3281.2438190418. The cubic root of 10766561 is about 220.8135238273.

The spelling of 10766561 in words is "ten million, seven hundred sixty-six thousand, five hundred sixty-one".