20072069 has 2 divisors, whose sum is σ = 20072070. Its totient is φ = 20072068.

The previous prime is 20072051. The next prime is 20072071. The reversal of 20072069 is 96027002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10647169 + 9424900 = 3263^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 20072069 - 2⁸ = 20071813 is a prime.

It is a super-3 number, since 3×20072069³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 20072071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20072029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10036034 + 10036035.

It is an arithmetic number, because the mean of its divisors is an integer number (10036035).

Almost surely, 2^20072069 is an apocalyptic number.

It is an amenable number.

20072069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20072069 is an equidigital number, since it uses as much as digits as its factorization.

20072069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20072069 is about 4480.1862684491. The cubic root of 20072069 is about 271.7674130880.

The spelling of 20072069 in words is "twenty million, seventy-two thousand, sixty-nine".