68147144 has 16 divisors (see below), whose sum is σ = 137605020. Its totient is φ = 31452480.

The previous prime is 68147119. The next prime is 68147147. The reversal of 68147144 is 44174186.

It can be written as a sum of positive squares in 2 ways, for example, as 67404100 + 743044 = 8210^2 + 862^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68147147) 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, 327527 + ... + 327734.

Almost surely, 2^68147144 is an apocalyptic number.

It is an amenable number.

68147144 is an abundant number, since it is smaller than the sum of its proper divisors (69457876).

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

68147144 is a wasteful number, since it uses less digits than its factorization.

68147144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655280 (or 655276 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 68147144 is about 8255.1283454590. The cubic root of 68147144 is about 408.4597054739.

The spelling of 68147144 in words is "sixty-eight million, one hundred forty-seven thousand, one hundred forty-four".