137797687 has 2 divisors, whose sum is σ = 137797688. Its totient is φ = 137797686.

The previous prime is 137797637. The next prime is 137797741. The reversal of 137797687 is 786797731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137797687 - 2¹¹ = 137795639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137797637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68898843 + 68898844.

It is an arithmetic number, because the mean of its divisors is an integer number (68898844).

Almost surely, 2^137797687 is an apocalyptic number.

137797687 is a deficient number, since it is larger than the sum of its proper divisors (1).

137797687 is an equidigital number, since it uses as much as digits as its factorization.

137797687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3111696, while the sum is 55.

The square root of 137797687 is about 11738.7259530155. The cubic root of 137797687 is about 516.5122696941.

The spelling of 137797687 in words is "one hundred thirty-seven million, seven hundred ninety-seven thousand, six hundred eighty-seven".