68137756 has 6 divisors (see below), whose sum is σ = 119241080. Its totient is φ = 34068876.

The previous prime is 68137739. The next prime is 68137763. The reversal of 68137756 is 65773186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8517216 + ... + 8517223.

Almost surely, 2^68137756 is an apocalyptic number.

It is an amenable number.

68137756 is a deficient number, since it is larger than the sum of its proper divisors (51103324).

68137756 is a wasteful number, since it uses less digits than its factorization.

68137756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17034443 (or 17034441 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 68137756 is about 8254.5597096393. The cubic root of 68137756 is about 408.4409480440.

The spelling of 68137756 in words is "sixty-eight million, one hundred thirty-seven thousand, seven hundred fifty-six".