69966641 has 2 divisors, whose sum is σ = 69966642. Its totient is φ = 69966640.

The previous prime is 69966629. The next prime is 69966733. The reversal of 69966641 is 14666996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 23726641 = 6800^2 + 4871^2 .

It is a cyclic number.

It is not a de Polignac number, because 69966641 - 2¹⁰ = 69965617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69926641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34983320 + 34983321.

It is an arithmetic number, because the mean of its divisors is an integer number (34983321).

Almost surely, 2^69966641 is an apocalyptic number.

It is an amenable number.

69966641 is a deficient number, since it is larger than the sum of its proper divisors (1).

69966641 is an equidigital number, since it uses as much as digits as its factorization.

69966641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 69966641 is about 8364.6064462113. The cubic root of 69966641 is about 412.0630519802.

It can be divided in two parts, 69966 and 641, that added together give a palindrome (70607).

The spelling of 69966641 in words is "sixty-nine million, nine hundred sixty-six thousand, six hundred forty-one".