20166077 has 2 divisors, whose sum is σ = 20166078. Its totient is φ = 20166076.

The previous prime is 20166053. The next prime is 20166119. The reversal of 20166077 is 77066102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12208036 + 7958041 = 3494^2 + 2821^2 .

It is a cyclic number.

It is not a de Polignac number, because 20166077 - 2¹⁶ = 20100541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20166877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10083038 + 10083039.

It is an arithmetic number, because the mean of its divisors is an integer number (10083039).

Almost surely, 2^20166077 is an apocalyptic number.

It is an amenable number.

20166077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20166077 is an equidigital number, since it uses as much as digits as its factorization.

20166077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 20166077 is about 4490.6655408748. The cubic root of 20166077 is about 272.1910287610.

The spelling of 20166077 in words is "twenty million, one hundred sixty-six thousand, seventy-seven".