68467644 has 72 divisors (see below), whose sum is σ = 199905888. Its totient is φ = 19353600.

The previous prime is 68467639. The next prime is 68467669. The reversal of 68467644 is 44676486.

It is a self number, because there is not a number n which added to its sum of digits gives 68467644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23044 + ... + 25844.

Almost surely, 2^68467644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68467644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99952944).

68467644 is an abundant number, since it is smaller than the sum of its proper divisors (131438244).

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

68467644 is a wasteful number, since it uses less digits than its factorization.

68467644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915 (or 2910 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 68467644 is about 8274.5177502982. The cubic root of 68467644 is about 409.0990408619.

The spelling of 68467644 in words is "sixty-eight million, four hundred sixty-seven thousand, six hundred forty-four".