137870713 has 2 divisors, whose sum is σ = 137870714. Its totient is φ = 137870712.

The previous prime is 137870699. The next prime is 137870723. The reversal of 137870713 is 317078731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72131049 + 65739664 = 8493^2 + 8108^2 .

It is an emirp because it is prime and its reverse (317078731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137870713 - 2¹³ = 137862521 is a prime.

It is not a weakly prime, because it can be changed into another prime (137870723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68935356 + 68935357.

It is an arithmetic number, because the mean of its divisors is an integer number (68935357).

Almost surely, 2^137870713 is an apocalyptic number.

It is an amenable number.

137870713 is a deficient number, since it is larger than the sum of its proper divisors (1).

137870713 is an equidigital number, since it uses as much as digits as its factorization.

137870713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 137870713 is about 11741.8360148658. The cubic root of 137870713 is about 516.6034956180.

The spelling of 137870713 in words is "one hundred thirty-seven million, eight hundred seventy thousand, seven hundred thirteen".