135980687 has 2 divisors, whose sum is σ = 135980688. Its totient is φ = 135980686.

The previous prime is 135980653. The next prime is 135980693. The reversal of 135980687 is 786089531.

It is a happy number.

135980687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135980687 - 2¹⁸ = 135718543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135980617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67990343 + 67990344.

It is an arithmetic number, because the mean of its divisors is an integer number (67990344).

Almost surely, 2^135980687 is an apocalyptic number.

135980687 is a deficient number, since it is larger than the sum of its proper divisors (1).

135980687 is an equidigital number, since it uses as much as digits as its factorization.

135980687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 135980687 is about 11661.0757222479. The cubic root of 135980687 is about 514.2319742531.

The spelling of 135980687 in words is "one hundred thirty-five million, nine hundred eighty thousand, six hundred eighty-seven".