20606606 has 8 divisors (see below), whose sum is σ = 31046760. Its totient is φ = 10257688.

The previous prime is 20606563. The next prime is 20606627. The reversal of 20606606 is 60660602.

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

It is a Curzon number.

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, 22241 + ... + 23148.

It is an arithmetic number, because the mean of its divisors is an integer number (3880845).

Almost surely, 2^20606606 is an apocalyptic number.

20606606 is a deficient number, since it is larger than the sum of its proper divisors (10440154).

20606606 is a wasteful number, since it uses less digits than its factorization.

20606606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45618.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20606606 is about 4539.4499666810. The cubic root of 20606606 is about 274.1587780959.

It can be divided in two parts, 20606 and 606, that added together give a palindrome (21212).

The spelling of 20606606 in words is "twenty million, six hundred six thousand, six hundred six".