166583223 has 20 divisors (see below), whose sum is σ = 249241608. Its totient is φ = 110879280.

The previous prime is 166583201. The next prime is 166583231. The reversal of 166583223 is 322385661.

It is a happy number.

It is not a de Polignac number, because 166583223 - 2⁵ = 166583191 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166583623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67888 + ... + 70298.

Almost surely, 2^166583223 is an apocalyptic number.

166583223 is a deficient number, since it is larger than the sum of its proper divisors (82658385).

166583223 is an equidigital number, since it uses as much as digits as its factorization.

166583223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276 (or 3267 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 166583223 is about 12906.7123234385. The cubic root of 166583223 is about 550.2293511787.

It can be divided in two parts, 16658 and 3223, that added together give a square (19881 = 141²).

The spelling of 166583223 in words is "one hundred sixty-six million, five hundred eighty-three thousand, two hundred twenty-three".