20970166 has 8 divisors (see below), whose sum is σ = 35948880. Its totient is φ = 8987208.

The previous prime is 20970151. The next prime is 20970203. The reversal of 20970166 is 66107902.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748921 + ... + 748948.

It is an arithmetic number, because the mean of its divisors is an integer number (4493610).

Almost surely, 2^20970166 is an apocalyptic number.

20970166 is a deficient number, since it is larger than the sum of its proper divisors (14978714).

20970166 is a wasteful number, since it uses less digits than its factorization.

20970166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497878.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 20970166 is about 4579.3193817422. The cubic root of 20970166 is about 275.7617053319.

The spelling of 20970166 in words is "twenty million, nine hundred seventy thousand, one hundred sixty-six".