10165566 has 16 divisors (see below), whose sum is σ = 20383488. Its totient is φ = 3379800.

The previous prime is 10165543. The next prime is 10165577. The reversal of 10165566 is 66556101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621 + ... + 4551.

It is an arithmetic number, because the mean of its divisors is an integer number (1273968).

Almost surely, 2^10165566 is an apocalyptic number.

10165566 is an abundant number, since it is smaller than the sum of its proper divisors (10217922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10165566 is a wasteful number, since it uses less digits than its factorization.

10165566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367.

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

The square root of 10165566 is about 3188.3484753082. The cubic root of 10165566 is about 216.6259705288.

It can be divided in two parts, 10165 and 566, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10165566 in words is "ten million, one hundred sixty-five thousand, five hundred sixty-six".