206166045 has 8 divisors (see below), whose sum is σ = 329865696. Its totient is φ = 109955216.

The previous prime is 206166041. The next prime is 206166049. The reversal of 206166045 is 540661602.

It is an interprime number because it is at equal distance from previous prime (206166041) and next prime (206166049).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206166045 - 2² = 206166041 is a prime.

It is a super-2 number, since 2×206166045² = 85008876221884050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206166041) 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 7 ways as a sum of consecutive naturals, for example, 6872187 + ... + 6872216.

It is an arithmetic number, because the mean of its divisors is an integer number (41233212).

Almost surely, 2^206166045 is an apocalyptic number.

It is an amenable number.

206166045 is a deficient number, since it is larger than the sum of its proper divisors (123699651).

206166045 is a wasteful number, since it uses less digits than its factorization.

206166045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13744411.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 206166045 is about 14358.4833809146. The cubic root of 206166045 is about 590.7526972847.

The spelling of 206166045 in words is "two hundred six million, one hundred sixty-six thousand, forty-five".