20608955 has 8 divisors (see below), whose sum is σ = 25528704. Its totient is φ = 15955200.

The previous prime is 20608927. The next prime is 20608979. The reversal of 20608955 is 55980602.

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

It is not a de Polignac number, because 20608955 - 2¹⁸ = 20346811 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 66326 + ... + 66635.

It is an arithmetic number, because the mean of its divisors is an integer number (3191088).

Almost surely, 2^20608955 is an apocalyptic number.

20608955 is a deficient number, since it is larger than the sum of its proper divisors (4919749).

20608955 is a wasteful number, since it uses less digits than its factorization.

20608955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132997.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 20608955 is about 4539.7086910946. The cubic root of 20608955 is about 274.1691950547.

The spelling of 20608955 in words is "twenty million, six hundred eight thousand, nine hundred fifty-five".