10666305 has 24 divisors (see below), whose sum is σ = 19911528. Its totient is φ = 5250816.

The previous prime is 10666297. The next prime is 10666309. The reversal of 10666305 is 50366601.

It can be written as a sum of positive squares in 4 ways, for example, as 400689 + 10265616 = 633^2 + 3204^2 .

It is not a de Polignac number, because 10666305 - 2³ = 10666297 is a prime.

It is a super-2 number, since 2×10666305² = 227540124706050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10666309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8532 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (829647).

Almost surely, 2^10666305 is an apocalyptic number.

10666305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10666305 is a deficient number, since it is larger than the sum of its proper divisors (9245223).

10666305 is a wasteful number, since it uses less digits than its factorization.

10666305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18257 (or 18254 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 10666305 is about 3265.9309545672. The cubic root of 10666305 is about 220.1259953211.

The spelling of 10666305 in words is "ten million, six hundred sixty-six thousand, three hundred five".