165566010 has 32 divisors (see below), whose sum is σ = 399369600. Its totient is φ = 43927488.

The previous prime is 165565997. The next prime is 165566059. The reversal of 165566010 is 10665561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7897 + ... + 19836.

It is an arithmetic number, because the mean of its divisors is an integer number (12480300).

Almost surely, 2^165566010 is an apocalyptic number.

165566010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165566010 is an abundant number, since it is smaller than the sum of its proper divisors (233803590).

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

165566010 is a wasteful number, since it uses less digits than its factorization.

165566010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27942.

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

The square root of 165566010 is about 12867.2456260071. The cubic root of 165566010 is about 549.1071021731.

The spelling of 165566010 in words is "one hundred sixty-five million, five hundred sixty-six thousand, ten".