68555 has 4 divisors (see below), whose sum is σ = 82272. Its totient is φ = 54840.

The previous prime is 68543. The next prime is 68567. The reversal of 68555 is 55586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55586 = 2 ⋅27793.

It is an interprime number because it is at equal distance from previous prime (68543) and next prime (68567).

It is not a de Polignac number, because 68555 - 2⁴ = 68539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6851 + ... + 6860.

It is an arithmetic number, because the mean of its divisors is an integer number (20568).

2⁶⁸⁵⁵⁵ is an apocalyptic number.

68555 is a deficient number, since it is larger than the sum of its proper divisors (13717).

68555 is a wasteful number, since it uses less digits than its factorization.

68555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716.

The product of its digits is 6000, while the sum is 29.

The square root of 68555 is about 261.8300975824. The cubic root of 68555 is about 40.9272953023.

It can be divided in two parts, 685 and 55, that multiplied together give a triangular number (37675 = T₂₇₄).

The spelling of 68555 in words is "sixty-eight thousand, five hundred fifty-five".