166564003 has 2 divisors, whose sum is σ = 166564004. Its totient is φ = 166564002.

The previous prime is 166563997. The next prime is 166564009. The reversal of 166564003 is 300465661.

166564003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (166563997) and next prime (166564009).

It is a cyclic number.

It is not a de Polignac number, because 166564003 - 2²⁵ = 133009571 is a prime.

It is not a weakly prime, because it can be changed into another prime (166564009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83282001 + 83282002.

It is an arithmetic number, because the mean of its divisors is an integer number (83282002).

Almost surely, 2^166564003 is an apocalyptic number.

166564003 is a deficient number, since it is larger than the sum of its proper divisors (1).

166564003 is an equidigital number, since it uses as much as digits as its factorization.

166564003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 166564003 is about 12905.9677281481. The cubic root of 166564003 is about 550.2081889539.

The spelling of 166564003 in words is "one hundred sixty-six million, five hundred sixty-four thousand, three".