20466377 has 2 divisors, whose sum is σ = 20466378. Its totient is φ = 20466376.

The previous prime is 20466359. The next prime is 20466437. The reversal of 20466377 is 77366402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19882681 + 583696 = 4459^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466377 - 2¹⁰ = 20465353 is a prime.

It is a super-2 number, since 2×20466377² = 837745175012258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20466577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233188 + 10233189.

It is an arithmetic number, because the mean of its divisors is an integer number (10233189).

Almost surely, 2^20466377 is an apocalyptic number.

It is an amenable number.

20466377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466377 is an equidigital number, since it uses as much as digits as its factorization.

20466377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 20466377 is about 4523.9780061358. The cubic root of 20466377 is about 273.5354739438.

The spelling of 20466377 in words is "twenty million, four hundred sixty-six thousand, three hundred seventy-seven".