166366233 has 48 divisors (see below), whose sum is σ = 284461632. Its totient is φ = 92544000.

The previous prime is 166366231. The next prime is 166366237. The reversal of 166366233 is 332663661.

It is a happy number.

166366233 is a `hidden beast` number, since 1 + 66 + 366 + 233 = 666.

It is not a de Polignac number, because 166366233 - 2¹ = 166366231 is a prime.

It is a super-2 number, since 2×166366233² = 55355446965220578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166366231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67798 + ... + 70208.

It is an arithmetic number, because the mean of its divisors is an integer number (5926284).

Almost surely, 2^166366233 is an apocalyptic number.

It is an amenable number.

166366233 is a deficient number, since it is larger than the sum of its proper divisors (118095399).

166366233 is a wasteful number, since it uses less digits than its factorization.

166366233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2483 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 166366233 is about 12898.3034930955. The cubic root of 166366233 is about 549.9903392242.

It can be divided in two parts, 1663 and 66233, that added together give a triangular number (67896 = T₃₆₈).

The spelling of 166366233 in words is "one hundred sixty-six million, three hundred sixty-six thousand, two hundred thirty-three".