138602713 has 4 divisors (see below), whose sum is σ = 138750948. Its totient is φ = 138454480.

The previous prime is 138602707. The next prime is 138602729. The reversal of 138602713 is 317206831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114661264 + 23941449 = 10708^2 + 4893^2 .

It is a cyclic number.

It is not a de Polignac number, because 138602713 - 2²¹ = 136505561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138602753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72706 + ... + 74587.

It is an arithmetic number, because the mean of its divisors is an integer number (34687737).

Almost surely, 2^138602713 is an apocalyptic number.

It is an amenable number.

138602713 is a deficient number, since it is larger than the sum of its proper divisors (148235).

138602713 is an equidigital number, since it uses as much as digits as its factorization.

138602713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148234.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 138602713 is about 11772.9653443812. The cubic root of 138602713 is about 517.5161537428.

The spelling of 138602713 in words is "one hundred thirty-eight million, six hundred two thousand, seven hundred thirteen".