68137072 has 10 divisors (see below), whose sum is σ = 132015608. Its totient is φ = 34068528.

The previous prime is 68137049. The next prime is 68137073. The reversal of 68137072 is 27073186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68137073) by changing a digit.

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 as a sum of consecutive naturals, namely, 2129268 + ... + 2129299.

Almost surely, 2^68137072 is an apocalyptic number.

It is an amenable number.

68137072 is a deficient number, since it is larger than the sum of its proper divisors (63878536).

68137072 is a wasteful number, since it uses less digits than its factorization.

68137072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258575 (or 4258569 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 68137072 is about 8254.5182778888. The cubic root of 68137072 is about 408.4395813297.

The spelling of 68137072 in words is "sixty-eight million, one hundred thirty-seven thousand, seventy-two".