10866257 has 4 divisors (see below), whose sum is σ = 10873920. Its totient is φ = 10858596.

The previous prime is 10866253. The next prime is 10866299. The reversal of 10866257 is 75266801.

10866257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75266801 = 421 ⋅178781.

It is a cyclic number.

It is not a de Polignac number, because 10866257 - 2² = 10866253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10866253) 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, 1013 + ... + 4770.

It is an arithmetic number, because the mean of its divisors is an integer number (2718480).

Almost surely, 2^10866257 is an apocalyptic number.

It is an amenable number.

10866257 is a deficient number, since it is larger than the sum of its proper divisors (7663).

10866257 is an equidigital number, since it uses as much as digits as its factorization.

10866257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 10866257 is about 3296.4006127897. The cubic root of 10866257 is about 221.4929925239.

The spelling of 10866257 in words is "ten million, eight hundred sixty-six thousand, two hundred fifty-seven".