20266606 has 4 divisors (see below), whose sum is σ = 30399912. Its totient is φ = 10133302.

The previous prime is 20266583. The next prime is 20266607. The reversal of 20266606 is 60666202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5066650 + ... + 5066653.

It is an arithmetic number, because the mean of its divisors is an integer number (7599978).

Almost surely, 2^20266606 is an apocalyptic number.

20266606 is a deficient number, since it is larger than the sum of its proper divisors (10133306).

20266606 is a wasteful number, since it uses less digits than its factorization.

20266606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133305.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20266606 is about 4501.8447329956. The cubic root of 20266606 is about 272.6425749988.

The spelling of 20266606 in words is "twenty million, two hundred sixty-six thousand, six hundred six".