137756207 has 2 divisors, whose sum is σ = 137756208. Its totient is φ = 137756206.

The previous prime is 137756197. The next prime is 137756231. The reversal of 137756207 is 702657731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137756207 - 2⁸ = 137755951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137756237) 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, 68878103 + 68878104.

It is an arithmetic number, because the mean of its divisors is an integer number (68878104).

Almost surely, 2^137756207 is an apocalyptic number.

137756207 is a deficient number, since it is larger than the sum of its proper divisors (1).

137756207 is an equidigital number, since it uses as much as digits as its factorization.

137756207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 38.

The square root of 137756207 is about 11736.9590184170. The cubic root of 137756207 is about 516.4604374765.

The spelling of 137756207 in words is "one hundred thirty-seven million, seven hundred fifty-six thousand, two hundred seven".