20069911 has 8 divisors (see below), whose sum is σ = 21289824. Its totient is φ = 18854400.

The previous prime is 20069899. The next prime is 20069923. The reversal of 20069911 is 11996002.

It is an interprime number because it is at equal distance from previous prime (20069899) and next prime (20069923).

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 20069911 - 2¹⁷ = 19938839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20069911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20069941) 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, 16111 + ... + 17311.

It is an arithmetic number, because the mean of its divisors is an integer number (2661228).

Almost surely, 2^20069911 is an apocalyptic number.

20069911 is a deficient number, since it is larger than the sum of its proper divisors (1219913).

20069911 is a wasteful number, since it uses less digits than its factorization.

20069911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 20069911 is about 4479.9454237747. The cubic root of 20069911 is about 271.7576732666.

The spelling of 20069911 in words is "twenty million, sixty-nine thousand, nine hundred eleven".