145688 has 8 divisors (see below), whose sum is σ = 273180. Its totient is φ = 72840.

The previous prime is 145687. The next prime is 145703. The reversal of 145688 is 886541.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098 + ... + 9113.

2¹⁴⁵⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

145688 is a deficient number, since it is larger than the sum of its proper divisors (127492).

145688 is a wasteful number, since it uses less digits than its factorization.

145688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18217 (or 18213 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 145688 is about 381.6909744807. The cubic root of 145688 is about 52.6188388813.

The spelling of 145688 in words is "one hundred forty-five thousand, six hundred eighty-eight".