20206969 has 8 divisors (see below), whose sum is σ = 20759040. Its totient is φ = 19662000.

The previous prime is 20206961. The next prime is 20206981. The reversal of 20206969 is 96960202.

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 20206969 - 2³ = 20206961 is a prime.

It is a super-2 number, since 2×20206969² = 816643192333922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20206961) by changing a digit.

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, 4264 + ... + 7654.

It is an arithmetic number, because the mean of its divisors is an integer number (2594880).

Almost surely, 2^20206969 is an apocalyptic number.

It is an amenable number.

20206969 is a deficient number, since it is larger than the sum of its proper divisors (552071).

20206969 is a wasteful number, since it uses less digits than its factorization.

20206969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20206969 is about 4495.2162350659. The cubic root of 20206969 is about 272.3748840662.

The spelling of 20206969 in words is "twenty million, two hundred six thousand, nine hundred sixty-nine".