69669643 has 2 divisors, whose sum is σ = 69669644. Its totient is φ = 69669642.

The previous prime is 69669601. The next prime is 69669647. The reversal of 69669643 is 34696696.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69669643 is a prime.

It is not a weakly prime, because it can be changed into another prime (69669647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34834821 + 34834822.

It is an arithmetic number, because the mean of its divisors is an integer number (34834822).

Almost surely, 2^69669643 is an apocalyptic number.

69669643 is a deficient number, since it is larger than the sum of its proper divisors (1).

69669643 is an equidigital number, since it uses as much as digits as its factorization.

69669643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 49.

The square root of 69669643 is about 8346.8343100843. The cubic root of 69669643 is about 411.4791762244.

The spelling of 69669643 in words is "sixty-nine million, six hundred sixty-nine thousand, six hundred forty-three".