137870699 has 2 divisors, whose sum is σ = 137870700. Its totient is φ = 137870698.

The previous prime is 137870687. The next prime is 137870713. The reversal of 137870699 is 996078731.

It is a weak prime.

It is an emirp because it is prime and its reverse (996078731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137870699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (137870899) 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, 68935349 + 68935350.

It is an arithmetic number, because the mean of its divisors is an integer number (68935350).

Almost surely, 2^137870699 is an apocalyptic number.

137870699 is a deficient number, since it is larger than the sum of its proper divisors (1).

137870699 is an equidigital number, since it uses as much as digits as its factorization.

137870699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 137870699 is about 11741.8354187069. The cubic root of 137870699 is about 516.6034781320.

The spelling of 137870699 in words is "one hundred thirty-seven million, eight hundred seventy thousand, six hundred ninety-nine".