68727746 has 4 divisors (see below), whose sum is σ = 103091622. Its totient is φ = 34363872.

The previous prime is 68727733. The next prime is 68727779. The reversal of 68727746 is 64772786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 27447121 = 6425^2 + 5239^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68727746.

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 as a sum of consecutive naturals, namely, 17181935 + ... + 17181938.

Almost surely, 2^68727746 is an apocalyptic number.

68727746 is a deficient number, since it is larger than the sum of its proper divisors (34363876).

68727746 is a wasteful number, since it uses less digits than its factorization.

68727746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34363875.

The product of its digits is 790272, while the sum is 47.

The square root of 68727746 is about 8290.2199005816. The cubic root of 68727746 is about 409.6164288925.

The spelling of 68727746 in words is "sixty-eight million, seven hundred twenty-seven thousand, seven hundred forty-six".