68625144 has 168 divisors, whose sum is σ = 225988680. Its totient is φ = 19128960.

The previous prime is 68625127. The next prime is 68625163. The reversal of 68625144 is 44152686.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68625099 and 68625108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 1673764 + ... + 1673804.

Almost surely, 2^68625144 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 68625144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112994340).

68625144 is an abundant number, since it is smaller than the sum of its proper divisors (157363536).

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

68625144 is an equidigital number, since it uses as much as digits as its factorization.

68625144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 53 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 68625144 is about 8284.0294543175. The cubic root of 68625144 is about 409.4124918676.

The spelling of 68625144 in words is "sixty-eight million, six hundred twenty-five thousand, one hundred forty-four".