20960655 has 16 divisors (see below), whose sum is σ = 33796224. Its totient is φ = 11092640.

The previous prime is 20960627. The next prime is 20960669. The reversal of 20960655 is 55606902.

It is not a de Polignac number, because 20960655 - 2⁵ = 20960623 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3369 + ... + 7298.

It is an arithmetic number, because the mean of its divisors is an integer number (2112264).

Almost surely, 2^20960655 is an apocalyptic number.

20960655 is a deficient number, since it is larger than the sum of its proper divisors (12835569).

20960655 is a wasteful number, since it uses less digits than its factorization.

20960655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10806.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 20960655 is about 4578.2807908646. The cubic root of 20960655 is about 275.7200085360.

The spelling of 20960655 in words is "twenty million, nine hundred sixty thousand, six hundred fifty-five".