20106635 has 8 divisors (see below), whose sum is σ = 24161760. Its totient is φ = 16062784.

The previous prime is 20106607. The next prime is 20106641. The reversal of 20106635 is 53660102.

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 20106635 - 2¹⁴ = 20090251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20106635.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1799 + ... + 6591.

It is an arithmetic number, because the mean of its divisors is an integer number (3020220).

Almost surely, 2^20106635 is an apocalyptic number.

20106635 is a deficient number, since it is larger than the sum of its proper divisors (4055125).

20106635 is an equidigital number, since it uses as much as digits as its factorization.

20106635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20106635 is about 4484.0422611746. The cubic root of 20106635 is about 271.9233266803.

Adding to 20106635 its reverse (53660102), we get a palindrome (73766737).

The spelling of 20106635 in words is "twenty million, one hundred six thousand, six hundred thirty-five".