669226027 has 2 divisors, whose sum is σ = 669226028. Its totient is φ = 669226026.

The previous prime is 669226013. The next prime is 669226057. The reversal of 669226027 is 720622966.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669226027 is a prime.

It is not a weakly prime, because it can be changed into another prime (669226007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334613013 + 334613014.

It is an arithmetic number, because the mean of its divisors is an integer number (334613014).

Almost surely, 2^669226027 is an apocalyptic number.

669226027 is a deficient number, since it is larger than the sum of its proper divisors (1).

669226027 is an equidigital number, since it uses as much as digits as its factorization.

669226027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 669226027 is about 25869.4032981049. The cubic root of 669226027 is about 874.6969408153.

The spelling of 669226027 in words is "six hundred sixty-nine million, two hundred twenty-six thousand, twenty-seven".