166471001 has 4 divisors (see below), whose sum is σ = 167741904. Its totient is φ = 165200100.

The previous prime is 166470971. The next prime is 166471009. The reversal of 166471001 is 100174661.

166471001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166471001 - 2⁶ = 166470937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166471009) 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, 635255 + ... + 635516.

It is an arithmetic number, because the mean of its divisors is an integer number (41935476).

Almost surely, 2^166471001 is an apocalyptic number.

It is an amenable number.

166471001 is a deficient number, since it is larger than the sum of its proper divisors (1270903).

166471001 is a wasteful number, since it uses less digits than its factorization.

166471001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270902.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 166471001 is about 12902.3641632067. The cubic root of 166471001 is about 550.1057658856.

The spelling of 166471001 in words is "one hundred sixty-six million, four hundred seventy-one thousand, one".