68646 has 16 divisors (see below), whose sum is σ = 145584. Its totient is φ = 21504.

The previous prime is 68639. The next prime is 68659. The reversal of 68646 is 64686.

It is a happy number.

It is a d-powerful number, because it can be written as 6 + 8³ + 6⁴ + 4⁸ + 6⁴ .

It is a congruent number.

It is an unprimeable number.

68646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235 + ... + 438.

It is an arithmetic number, because the mean of its divisors is an integer number (9099).

2⁶⁸⁶⁴⁶ is an apocalyptic number.

68646 is an abundant number, since it is smaller than the sum of its proper divisors (76938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72792).

68646 is a wasteful number, since it uses less digits than its factorization.

68646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its digits is 6912, while the sum is 30.

The square root of 68646 is about 262.0038167661. The cubic root of 68646 is about 40.9453962780.

The spelling of 68646 in words is "sixty-eight thousand, six hundred forty-six".