68418944 has 32 divisors (see below), whose sum is σ = 148697640. Its totient is φ = 31098880.

The previous prime is 68418913. The next prime is 68418947. The reversal of 68418944 is 44981486.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 68418895 and 68418904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68418947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22889 + ... + 25704.

Almost surely, 2^68418944 is an apocalyptic number.

68418944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68418944 is an abundant number, since it is smaller than the sum of its proper divisors (80278696).

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

68418944 is a wasteful number, since it uses less digits than its factorization.

68418944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48618 (or 48606 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 68418944 is about 8271.5744571393. The cubic root of 68418944 is about 409.0020225349.

The spelling of 68418944 in words is "sixty-eight million, four hundred eighteen thousand, nine hundred forty-four".