68544072 has 24 divisors (see below), whose sum is σ = 185640390. Its totient is φ = 22848000.

The previous prime is 68544067. The next prime is 68544083. The reversal of 68544072 is 27044586.

It can be written as a sum of positive squares in only one way, i.e., 66487716 + 2056356 = 8154^2 + 1434^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 475929 + ... + 476072.

Almost surely, 2^68544072 is an apocalyptic number.

It is an amenable number.

68544072 is an abundant number, since it is smaller than the sum of its proper divisors (117096318).

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

68544072 is a wasteful number, since it uses less digits than its factorization.

68544072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952013 (or 952006 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 68544072 is about 8279.1347373986. The cubic root of 68544072 is about 409.2512051687.

The spelling of 68544072 in words is "sixty-eight million, five hundred forty-four thousand, seventy-two".