20044697 has 2 divisors, whose sum is σ = 20044698. Its totient is φ = 20044696.

The previous prime is 20044679. The next prime is 20044699. The reversal of 20044697 is 79644002.

Together with previous prime (20044679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 3916441 = 4016^2 + 1979^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044697 - 2¹⁶ = 19979161 is a prime.

Together with 20044699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20044699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022348 + 10022349.

It is an arithmetic number, because the mean of its divisors is an integer number (10022349).

Almost surely, 2^20044697 is an apocalyptic number.

It is an amenable number.

20044697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044697 is an equidigital number, since it uses as much as digits as its factorization.

20044697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 20044697 is about 4477.1304425938. The cubic root of 20044697 is about 271.6438217498.

Adding to 20044697 its reverse (79644002), we get a palindrome (99688699).

The spelling of 20044697 in words is "twenty million, forty-four thousand, six hundred ninety-seven".