137968087 has 2 divisors, whose sum is σ = 137968088. Its totient is φ = 137968086.

The previous prime is 137968069. The next prime is 137968091. The reversal of 137968087 is 780869731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137968087 - 2¹¹ = 137966039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137968087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137968097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68984043 + 68984044.

It is an arithmetic number, because the mean of its divisors is an integer number (68984044).

Almost surely, 2^137968087 is an apocalyptic number.

137968087 is a deficient number, since it is larger than the sum of its proper divisors (1).

137968087 is an equidigital number, since it uses as much as digits as its factorization.

137968087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 137968087 is about 11745.9817384500. The cubic root of 137968087 is about 516.7250875782.

The spelling of 137968087 in words is "one hundred thirty-seven million, nine hundred sixty-eight thousand, eighty-seven".