20769335 has 4 divisors (see below), whose sum is σ = 24923208. Its totient is φ = 16615464.

The previous prime is 20769319. The next prime is 20769361. The reversal of 20769335 is 53396702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20769335 - 2⁴ = 20769319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20769295 and 20769304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2076929 + ... + 2076938.

It is an arithmetic number, because the mean of its divisors is an integer number (6230802).

Almost surely, 2^20769335 is an apocalyptic number.

20769335 is a deficient number, since it is larger than the sum of its proper divisors (4153873).

20769335 is an equidigital number, since it uses as much as digits as its factorization.

20769335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153872.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 20769335 is about 4557.3385873775. The cubic root of 20769335 is about 274.8785579484.

It can be divided in two parts, 2076 and 9335, that added together give a palindrome (11411).

The spelling of 20769335 in words is "twenty million, seven hundred sixty-nine thousand, three hundred thirty-five".