166261214 has 12 divisors (see below), whose sum is σ = 290109024. Its totient is φ = 71254764.

The previous prime is 166261213. The next prime is 166261243. The reversal of 166261214 is 412162661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166261211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 848174 + ... + 848369.

It is an arithmetic number, because the mean of its divisors is an integer number (24175752).

Almost surely, 2^166261214 is an apocalyptic number.

166261214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166261214 is a deficient number, since it is larger than the sum of its proper divisors (123847810).

166261214 is a wasteful number, since it uses less digits than its factorization.

166261214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696559 (or 1696552 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 166261214 is about 12894.2318111627. The cubic root of 166261214 is about 549.8745873832.

The spelling of 166261214 in words is "one hundred sixty-six million, two hundred sixty-one thousand, two hundred fourteen".