20069011 has 4 divisors (see below), whose sum is σ = 20079832. Its totient is φ = 20058192.

The previous prime is 20068999. The next prime is 20069017. The reversal of 20069011 is 11096002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20069011 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 20069011.

It is not an unprimeable number, because it can be changed into a prime (20069017) 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, 1845 + ... + 6598.

It is an arithmetic number, because the mean of its divisors is an integer number (5019958).

Almost surely, 2^20069011 is an apocalyptic number.

20069011 is a deficient number, since it is larger than the sum of its proper divisors (10821).

20069011 is an equidigital number, since it uses as much as digits as its factorization.

20069011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 20069011 is about 4479.8449749963. The cubic root of 20069011 is about 271.7536110403.

The spelling of 20069011 in words is "twenty million, sixty-nine thousand, eleven".