145687 has 2 divisors, whose sum is σ = 145688. Its totient is φ = 145686.

The previous prime is 145681. The next prime is 145703. The reversal of 145687 is 786541.

145687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145687 - 2³ = 145679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72843 + 72844.

It is an arithmetic number, because the mean of its divisors is an integer number (72844).

2¹⁴⁵⁶⁸⁷ is an apocalyptic number.

145687 is a deficient number, since it is larger than the sum of its proper divisors (1).

145687 is an equidigital number, since it uses as much as digits as its factorization.

145687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 145687 is about 381.6896645182. The cubic root of 145687 is about 52.6187184894.

The spelling of 145687 in words is "one hundred forty-five thousand, six hundred eighty-seven".