10166565 has 32 divisors (see below), whose sum is σ = 16998912. Its totient is φ = 5184000.

The previous prime is 10166551. The next prime is 10166567. The reversal of 10166565 is 56566101.

It is not a de Polignac number, because 10166565 - 2⁴ = 10166549 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10166567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37380 + ... + 37650.

It is an arithmetic number, because the mean of its divisors is an integer number (531216).

Almost surely, 2^10166565 is an apocalyptic number.

10166565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10166565 is a deficient number, since it is larger than the sum of its proper divisors (6832347).

10166565 is a wasteful number, since it uses less digits than its factorization.

10166565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 10166565 is about 3188.5051356396. The cubic root of 10166565 is about 216.6330664530.

It can be divided in two parts, 10166 and 565, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10166565 in words is "ten million, one hundred sixty-six thousand, five hundred sixty-five".