20764127 has 2 divisors, whose sum is σ = 20764128. Its totient is φ = 20764126.

The previous prime is 20764109. The next prime is 20764153. The reversal of 20764127 is 72146702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20764127 - 2⁶ = 20764063 is a prime.

It is a super-2 number, since 2×20764127² = 862297940144258, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20764127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20764187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382063 + 10382064.

It is an arithmetic number, because the mean of its divisors is an integer number (10382064).

Almost surely, 2^20764127 is an apocalyptic number.

20764127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20764127 is an equidigital number, since it uses as much as digits as its factorization.

20764127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 20764127 is about 4556.7671654365. The cubic root of 20764127 is about 274.8555803679.

The spelling of 20764127 in words is "twenty million, seven hundred sixty-four thousand, one hundred twenty-seven".