20662606 has 8 divisors (see below), whose sum is σ = 31749984. Its totient is φ = 10079280.

The previous prime is 20662589. The next prime is 20662619. The reversal of 20662606 is 60626602.

20662606 is nontrivially palindromic in base 15.

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

It is a super-2 number, since 2×20662606² = 853886573422472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 125910 + ... + 126073.

It is an arithmetic number, because the mean of its divisors is an integer number (3968748).

Almost surely, 2^20662606 is an apocalyptic number.

20662606 is a deficient number, since it is larger than the sum of its proper divisors (11087378).

20662606 is a wasteful number, since it uses less digits than its factorization.

20662606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252026.

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

The square root of 20662606 is about 4545.6139299329. The cubic root of 20662606 is about 274.4069024916.

The spelling of 20662606 in words is "twenty million, six hundred sixty-two thousand, six hundred six".