20606255 has 8 divisors (see below), whose sum is σ = 24757152. Its totient is φ = 16465248.

The previous prime is 20606237. The next prime is 20606273. The reversal of 20606255 is 55260602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20606237) and next prime (20606273).

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

It is a cyclic number.

It is not a de Polignac number, because 20606255 - 2⁶ = 20606191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (3094644).

Almost surely, 2^20606255 is an apocalyptic number.

20606255 is a deficient number, since it is larger than the sum of its proper divisors (4150897).

20606255 is a wasteful number, since it uses less digits than its factorization.

20606255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945.

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

The square root of 20606255 is about 4539.4113054448. The cubic root of 20606255 is about 274.1572214708.

Adding to 20606255 its reverse (55260602), we get a palindrome (75866857).

The spelling of 20606255 in words is "twenty million, six hundred six thousand, two hundred fifty-five".