165066471 has 32 divisors (see below), whose sum is σ = 260736000. Its totient is φ = 102907584.

The previous prime is 165066467. The next prime is 165066479. The reversal of 165066471 is 174660561.

165066471 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 6 + 647 + 1 = 666.

It is not a de Polignac number, because 165066471 - 2² = 165066467 is a prime.

It is a super-3 number, since 3×165066471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165066479) 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, 38491 + ... + 42563.

It is an arithmetic number, because the mean of its divisors is an integer number (8148000).

Almost surely, 2^165066471 is an apocalyptic number.

165066471 is a deficient number, since it is larger than the sum of its proper divisors (95669529).

165066471 is a wasteful number, since it uses less digits than its factorization.

165066471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180 (or 4174 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 165066471 is about 12847.8196982990. The cubic root of 165066471 is about 548.5542979967.

It can be divided in two parts, 1650 and 66471, that added together give a square (68121 = 261²).

The spelling of 165066471 in words is "one hundred sixty-five million, sixty-six thousand, four hundred seventy-one".