20343669 has 4 divisors (see below), whose sum is σ = 27124896. Its totient is φ = 13562444.

The previous prime is 20343649. The next prime is 20343677. The reversal of 20343669 is 96634302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20343669 - 2¹² = 20339573 is a prime.

It is a super-2 number, since 2×20343669² = 827729736763122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3390609 + ... + 3390614.

It is an arithmetic number, because the mean of its divisors is an integer number (6781224).

Almost surely, 2^20343669 is an apocalyptic number.

It is an amenable number.

20343669 is a deficient number, since it is larger than the sum of its proper divisors (6781227).

20343669 is an equidigital number, since it uses as much as digits as its factorization.

20343669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781226.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 20343669 is about 4510.3956589195. The cubic root of 20343669 is about 272.9877089289.

It can be divided in two parts, 20343 and 669, that added together give a palindrome (21012).

The spelling of 20343669 in words is "twenty million, three hundred forty-three thousand, six hundred sixty-nine".