166006471 has 4 divisors (see below), whose sum is σ = 168820200. Its totient is φ = 163192744.

The previous prime is 166006429. The next prime is 166006483. The reversal of 166006471 is 174600661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174600661 = 5939 ⋅29399.

It is a cyclic number.

It is not a de Polignac number, because 166006471 - 2¹⁹ = 165482183 is a prime.

It is a super-3 number, since 3×166006471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166006871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406776 + ... + 1406893.

It is an arithmetic number, because the mean of its divisors is an integer number (42205050).

Almost surely, 2^166006471 is an apocalyptic number.

166006471 is a deficient number, since it is larger than the sum of its proper divisors (2813729).

166006471 is an equidigital number, since it uses as much as digits as its factorization.

166006471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813728.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 166006471 is about 12884.3498477804. The cubic root of 166006471 is about 549.5936072300.

The spelling of 166006471 in words is "one hundred sixty-six million, six thousand, four hundred seventy-one".