138612707 has 2 divisors, whose sum is σ = 138612708. Its totient is φ = 138612706.

The previous prime is 138612701. The next prime is 138612731. The reversal of 138612707 is 707216831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138612707 - 2⁸ = 138612451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138612701) 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, 69306353 + 69306354.

It is an arithmetic number, because the mean of its divisors is an integer number (69306354).

Almost surely, 2^138612707 is an apocalyptic number.

138612707 is a deficient number, since it is larger than the sum of its proper divisors (1).

138612707 is an equidigital number, since it uses as much as digits as its factorization.

138612707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 138612707 is about 11773.3897837454. The cubic root of 138612707 is about 517.5285920086.

The spelling of 138612707 in words is "one hundred thirty-eight million, six hundred twelve thousand, seven hundred seven".