69664627 has 2 divisors, whose sum is σ = 69664628. Its totient is φ = 69664626.

The previous prime is 69664619. The next prime is 69664643. The reversal of 69664627 is 72646696.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69664627 - 2³ = 69664619 is a prime.

It is not a weakly prime, because it can be changed into another prime (69664607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34832313 + 34832314.

It is an arithmetic number, because the mean of its divisors is an integer number (34832314).

Almost surely, 2^69664627 is an apocalyptic number.

69664627 is a deficient number, since it is larger than the sum of its proper divisors (1).

69664627 is an equidigital number, since it uses as much as digits as its factorization.

69664627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 46.

The square root of 69664627 is about 8346.5338314776. The cubic root of 69664627 is about 411.4693009091.

The spelling of 69664627 in words is "sixty-nine million, six hundred sixty-four thousand, six hundred twenty-seven".