68705565 has 16 divisors (see below), whose sum is σ = 110509056. Its totient is φ = 36449600.

The previous prime is 68705563. The next prime is 68705591. The reversal of 68705565 is 56550786.

It is not a de Polignac number, because 68705565 - 2¹ = 68705563 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68705561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9126 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (6906816).

Almost surely, 2^68705565 is an apocalyptic number.

It is an amenable number.

68705565 is a deficient number, since it is larger than the sum of its proper divisors (41803491).

68705565 is a wasteful number, since it uses less digits than its factorization.

68705565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24180.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 68705565 is about 8288.8820114657. The cubic root of 68705565 is about 409.5723579985.

The spelling of 68705565 in words is "sixty-eight million, seven hundred five thousand, five hundred sixty-five".