135787 has 2 divisors, whose sum is σ = 135788. Its totient is φ = 135786.

The previous prime is 135781. The next prime is 135799. The reversal of 135787 is 787531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135787 is a prime.

It is a Chen prime.

135787 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (135781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67893 + 67894.

It is an arithmetic number, because the mean of its divisors is an integer number (67894).

2¹³⁵⁷⁸⁷ is an apocalyptic number.

135787 is a deficient number, since it is larger than the sum of its proper divisors (1).

135787 is an equidigital number, since it uses as much as digits as its factorization.

135787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 135787 is about 368.4928764576. The cubic root of 135787 is about 51.3987705803.

It can be divided in two parts, 1357 and 87, that added together give a square (1444 = 38²).

The spelling of 135787 in words is "one hundred thirty-five thousand, seven hundred eighty-seven".