138696611 has 2 divisors, whose sum is σ = 138696612. Its totient is φ = 138696610.

The previous prime is 138696581. The next prime is 138696619. The reversal of 138696611 is 116696831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138696611 - 2¹⁰ = 138695587 is a prime.

It is not a weakly prime, because it can be changed into another prime (138696619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69348305 + 69348306.

It is an arithmetic number, because the mean of its divisors is an integer number (69348306).

Almost surely, 2^138696611 is an apocalyptic number.

138696611 is a deficient number, since it is larger than the sum of its proper divisors (1).

138696611 is an equidigital number, since it uses as much as digits as its factorization.

138696611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 138696611 is about 11776.9525345057. The cubic root of 138696611 is about 517.6329931164.

The spelling of 138696611 in words is "one hundred thirty-eight million, six hundred ninety-six thousand, six hundred eleven".