134887 has 2 divisors, whose sum is σ = 134888. Its totient is φ = 134886.

The previous prime is 134873. The next prime is 134909. The reversal of 134887 is 788431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134887 is a prime.

It is a Chen prime.

134887 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67443 + 67444.

It is an arithmetic number, because the mean of its divisors is an integer number (67444).

2¹³⁴⁸⁸⁷ is an apocalyptic number.

134887 is a deficient number, since it is larger than the sum of its proper divisors (1).

134887 is an equidigital number, since it uses as much as digits as its factorization.

134887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 134887 is about 367.2696557027. The cubic root of 134887 is about 51.2849612729.

It can be divided in two parts, 13 and 4887, that added together give a square (4900 = 70²).

The spelling of 134887 in words is "one hundred thirty-four thousand, eight hundred eighty-seven".