20366069 has 2 divisors, whose sum is σ = 20366070. Its totient is φ = 20366068.

The previous prime is 20366029. The next prime is 20366089. The reversal of 20366069 is 96066302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13965169 + 6400900 = 3737^2 + 2530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20366069 is a prime.

It is a super-2 number, since 2×20366069² = 829553533025522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20366029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10183034 + 10183035.

It is an arithmetic number, because the mean of its divisors is an integer number (10183035).

Almost surely, 2^20366069 is an apocalyptic number.

It is an amenable number.

20366069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20366069 is an equidigital number, since it uses as much as digits as its factorization.

20366069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 20366069 is about 4512.8781282016. The cubic root of 20366069 is about 273.0878659148.

The spelling of 20366069 in words is "twenty million, three hundred sixty-six thousand, sixty-nine".