69938689 has 2 divisors, whose sum is σ = 69938690. Its totient is φ = 69938688.

The previous prime is 69938669. The next prime is 69938711. The reversal of 69938689 is 98683996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60575089 + 9363600 = 7783^2 + 3060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69938689 is a prime.

It is not a weakly prime, because it can be changed into another prime (69938669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34969344 + 34969345.

It is an arithmetic number, because the mean of its divisors is an integer number (34969345).

Almost surely, 2^69938689 is an apocalyptic number.

It is an amenable number.

69938689 is a deficient number, since it is larger than the sum of its proper divisors (1).

69938689 is an equidigital number, since it uses as much as digits as its factorization.

69938689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 58.

The square root of 69938689 is about 8362.9354296204. The cubic root of 69938689 is about 412.0081709662.

The spelling of 69938689 in words is "sixty-nine million, nine hundred thirty-eight thousand, six hundred eighty-nine".