669737027 has 2 divisors, whose sum is σ = 669737028. Its totient is φ = 669737026.

The previous prime is 669737011. The next prime is 669737039. The reversal of 669737027 is 720737966.

It is a happy number.

669737027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669737027 - 2⁴ = 669737011 is a prime.

It is not a weakly prime, because it can be changed into another prime (669737227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334868513 + 334868514.

It is an arithmetic number, because the mean of its divisors is an integer number (334868514).

Almost surely, 2^669737027 is an apocalyptic number.

669737027 is a deficient number, since it is larger than the sum of its proper divisors (1).

669737027 is an equidigital number, since it uses as much as digits as its factorization.

669737027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 47.

The square root of 669737027 is about 25879.2779458779. The cubic root of 669737027 is about 874.9195145561.

The spelling of 669737027 in words is "six hundred sixty-nine million, seven hundred thirty-seven thousand, twenty-seven".