20270077 has 2 divisors, whose sum is σ = 20270078. Its totient is φ = 20270076.

The previous prime is 20270059. The next prime is 20270083. The reversal of 20270077 is 77007202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 298116 = 4469^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 20270077 - 2²³ = 11881469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20270027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135038 + 10135039.

It is an arithmetic number, because the mean of its divisors is an integer number (10135039).

Almost surely, 2^20270077 is an apocalyptic number.

It is an amenable number.

20270077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20270077 is an equidigital number, since it uses as much as digits as its factorization.

20270077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 20270077 is about 4502.2302251218. The cubic root of 20270077 is about 272.6581389986.

Adding to 20270077 its reverse (77007202), we get a palindrome (97277279).

The spelling of 20270077 in words is "twenty million, two hundred seventy thousand, seventy-seven".