20575166 has 8 divisors (see below), whose sum is σ = 30883944. Its totient is φ = 10280520.

The previous prime is 20575141. The next prime is 20575171. The reversal of 20575166 is 66157502.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1601 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (3860493).

Almost surely, 2^20575166 is an apocalyptic number.

20575166 is a deficient number, since it is larger than the sum of its proper divisors (10308778).

20575166 is a wasteful number, since it uses less digits than its factorization.

20575166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20575166 is about 4535.9856701714. The cubic root of 20575166 is about 274.0192768863.

The spelling of 20575166 in words is "twenty million, five hundred seventy-five thousand, one hundred sixty-six".