69681413 has 2 divisors, whose sum is σ = 69681414. Its totient is φ = 69681412.

The previous prime is 69681383. The next prime is 69681431. The reversal of 69681413 is 31418696.

Together with next prime (69681431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 32982049 = 6058^2 + 5743^2 .

It is a cyclic number.

It is not a de Polignac number, because 69681413 - 2⁶ = 69681349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69681433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34840706 + 34840707.

It is an arithmetic number, because the mean of its divisors is an integer number (34840707).

Almost surely, 2^69681413 is an apocalyptic number.

It is an amenable number.

69681413 is a deficient number, since it is larger than the sum of its proper divisors (1).

69681413 is an equidigital number, since it uses as much as digits as its factorization.

69681413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 69681413 is about 8347.5393380325. The cubic root of 69681413 is about 411.5023467044.

The spelling of 69681413 in words is "sixty-nine million, six hundred eighty-one thousand, four hundred thirteen".