10766521 has 4 divisors (see below), whose sum is σ = 11333200. Its totient is φ = 10199844.

The previous prime is 10766489. The next prime is 10766531. The reversal of 10766521 is 12566701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10766521 - 2⁵ = 10766489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10766521.

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 3 ways as a sum of consecutive naturals, for example, 283311 + ... + 283348.

It is an arithmetic number, because the mean of its divisors is an integer number (2833300).

Almost surely, 2^10766521 is an apocalyptic number.

It is an amenable number.

10766521 is a deficient number, since it is larger than the sum of its proper divisors (566679).

10766521 is an equidigital number, since it uses as much as digits as its factorization.

10766521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566678.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 10766521 is about 3281.2377237866. The cubic root of 10766521 is about 220.8132503710.

The spelling of 10766521 in words is "ten million, seven hundred sixty-six thousand, five hundred twenty-one".