69690641 has 2 divisors, whose sum is σ = 69690642. Its totient is φ = 69690640.

The previous prime is 69690587. The next prime is 69690661. The reversal of 69690641 is 14609696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66080641 + 3610000 = 8129^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 69690641 - 2¹⁰ = 69689617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69690661) 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, 34845320 + 34845321.

It is an arithmetic number, because the mean of its divisors is an integer number (34845321).

Almost surely, 2^69690641 is an apocalyptic number.

It is an amenable number.

69690641 is a deficient number, since it is larger than the sum of its proper divisors (1).

69690641 is an equidigital number, since it uses as much as digits as its factorization.

69690641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 69690641 is about 8348.0920574704. The cubic root of 69690641 is about 411.5205111659.

The spelling of 69690641 in words is "sixty-nine million, six hundred ninety thousand, six hundred forty-one".