669546467 has 2 divisors, whose sum is σ = 669546468. Its totient is φ = 669546466.

The previous prime is 669546407. The next prime is 669546499. The reversal of 669546467 is 764645966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669546467 - 2⁸ = 669546211 is a prime.

It is not a weakly prime, because it can be changed into another prime (669546407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334773233 + 334773234.

It is an arithmetic number, because the mean of its divisors is an integer number (334773234).

Almost surely, 2^669546467 is an apocalyptic number.

669546467 is a deficient number, since it is larger than the sum of its proper divisors (1).

669546467 is an equidigital number, since it uses as much as digits as its factorization.

669546467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 53.

The square root of 669546467 is about 25875.5959738129. The cubic root of 669546467 is about 874.8365265219.

The spelling of 669546467 in words is "six hundred sixty-nine million, five hundred forty-six thousand, four hundred sixty-seven".