20027677 has 2 divisors, whose sum is σ = 20027678. Its totient is φ = 20027676.

The previous prime is 20027671. The next prime is 20027699. The reversal of 20027677 is 77672002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10719076 + 9308601 = 3274^2 + 3051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027677 is a prime.

It is a super-2 number, since 2×20027677² = 802215692032658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20027671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013838 + 10013839.

It is an arithmetic number, because the mean of its divisors is an integer number (10013839).

Almost surely, 2^20027677 is an apocalyptic number.

It is an amenable number.

20027677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027677 is an equidigital number, since it uses as much as digits as its factorization.

20027677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 20027677 is about 4475.2292678700. The cubic root of 20027677 is about 271.5669155065.

Adding to 20027677 its reverse (77672002), we get a palindrome (97699679).

The spelling of 20027677 in words is "twenty million, twenty-seven thousand, six hundred seventy-seven".