68315144 has 8 divisors (see below), whose sum is σ = 128090910. Its totient is φ = 34157568.

The previous prime is 68315123. The next prime is 68315179. The reversal of 68315144 is 44151386.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 28751044 = 6290^2 + 5362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 68315144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4269689 + ... + 4269704.

Almost surely, 2^68315144 is an apocalyptic number.

It is an amenable number.

68315144 is a deficient number, since it is larger than the sum of its proper divisors (59775766).

68315144 is a wasteful number, since it uses less digits than its factorization.

68315144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8539399 (or 8539395 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 68315144 is about 8265.2975748003. The cubic root of 68315144 is about 408.7950822973.

The spelling of 68315144 in words is "sixty-eight million, three hundred fifteen thousand, one hundred forty-four".