669046111 has 2 divisors, whose sum is σ = 669046112. Its totient is φ = 669046110.

The previous prime is 669046013. The next prime is 669046141. The reversal of 669046111 is 111640966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669046111 - 2⁷ = 669045983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669046141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334523055 + 334523056.

It is an arithmetic number, because the mean of its divisors is an integer number (334523056).

Almost surely, 2^669046111 is an apocalyptic number.

669046111 is a deficient number, since it is larger than the sum of its proper divisors (1).

669046111 is an equidigital number, since it uses as much as digits as its factorization.

669046111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 669046111 is about 25865.9256745240. The cubic root of 669046111 is about 874.6185487258.

The spelling of 669046111 in words is "six hundred sixty-nine million, forty-six thousand, one hundred eleven".