20255606 has 8 divisors (see below), whose sum is σ = 34723920. Its totient is φ = 8680968.

The previous prime is 20255603. The next prime is 20255621. The reversal of 20255606 is 60655202.

It is a happy number.

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 not an unprimeable number, because it can be changed into a prime (20255603) by changing a digit.

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, 723401 + ... + 723428.

It is an arithmetic number, because the mean of its divisors is an integer number (4340490).

Almost surely, 2^20255606 is an apocalyptic number.

20255606 is a deficient number, since it is larger than the sum of its proper divisors (14468314).

20255606 is a wasteful number, since it uses less digits than its factorization.

20255606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446838.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20255606 is about 4500.6228457848. The cubic root of 20255606 is about 272.5932391425.

The spelling of 20255606 in words is "twenty million, two hundred fifty-five thousand, six hundred six".