166613023 has 2 divisors, whose sum is σ = 166613024. Its totient is φ = 166613022.

The previous prime is 166613011. The next prime is 166613063. The reversal of 166613023 is 320316661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166613023 - 2¹³ = 166604831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166612982 and 166613000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166613063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83306511 + 83306512.

It is an arithmetic number, because the mean of its divisors is an integer number (83306512).

Almost surely, 2^166613023 is an apocalyptic number.

166613023 is a deficient number, since it is larger than the sum of its proper divisors (1).

166613023 is an equidigital number, since it uses as much as digits as its factorization.

166613023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 166613023 is about 12907.8667098789. The cubic root of 166613023 is about 550.2621593186.

Adding to 166613023 its reverse (320316661), we get a palindrome (486929684).

The spelling of 166613023 in words is "one hundred sixty-six million, six hundred thirteen thousand, twenty-three".