68506 has 4 divisors (see below), whose sum is σ = 102762. Its totient is φ = 34252.

The previous prime is 68501. The next prime is 68507. The reversal of 68506 is 60586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60586 = 2 ⋅30293.

It can be written as a sum of positive squares in only one way, i.e., 65025 + 3481 = 255^2 + 59^2 .

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (68501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17125 + ... + 17128.

2⁶⁸⁵⁰⁶ is an apocalyptic number.

68506 is a deficient number, since it is larger than the sum of its proper divisors (34256).

68506 is a wasteful number, since it uses less digits than its factorization.

68506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34255.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 68506 is about 261.7365087259. The cubic root of 68506 is about 40.9175419877.

The spelling of 68506 in words is "sixty-eight thousand, five hundred six".