20959066 has 4 divisors (see below), whose sum is σ = 31438602. Its totient is φ = 10479532.

The previous prime is 20959021. The next prime is 20959073. The reversal of 20959066 is 66095902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20894041 + 65025 = 4571^2 + 255^2 .

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 as a sum of consecutive naturals, namely, 5239765 + ... + 5239768.

Almost surely, 2^20959066 is an apocalyptic number.

20959066 is a deficient number, since it is larger than the sum of its proper divisors (10479536).

20959066 is a wasteful number, since it uses less digits than its factorization.

20959066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10479535.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 20959066 is about 4578.1072508188. The cubic root of 20959066 is about 275.7130410348.

The spelling of 20959066 in words is "twenty million, nine hundred fifty-nine thousand, sixty-six".