68726505 has 16 divisors (see below), whose sum is σ = 110640960. Its totient is φ = 36427968.

The previous prime is 68726503. The next prime is 68726519. The reversal of 68726505 is 50562786.

It is a happy number.

It is not a de Polignac number, because 68726505 - 2¹ = 68726503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68726503) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 11610 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (6915060).

Almost surely, 2^68726505 is an apocalyptic number.

It is an amenable number.

68726505 is a deficient number, since it is larger than the sum of its proper divisors (41914455).

68726505 is a wasteful number, since it uses less digits than its factorization.

68726505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28280.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 68726505 is about 8290.1450530132. The cubic root of 68726505 is about 409.6139634299.

The spelling of 68726505 in words is "sixty-eight million, seven hundred twenty-six thousand, five hundred five".