68240065 has 8 divisors (see below), whose sum is σ = 81990720. Its totient is φ = 54523632.

The previous prime is 68240047. The next prime is 68240069. The reversal of 68240065 is 56004286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68240065 - 2⁵ = 68240033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68240069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939 + ... + 12328.

It is an arithmetic number, because the mean of its divisors is an integer number (10248840).

Almost surely, 2^68240065 is an apocalyptic number.

It is an amenable number.

68240065 is a deficient number, since it is larger than the sum of its proper divisors (13750655).

68240065 is a wasteful number, since it uses less digits than its factorization.

68240065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17111.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 68240065 is about 8260.7545054916. The cubic root of 68240065 is about 408.6452708273.

The spelling of 68240065 in words is "sixty-eight million, two hundred forty thousand, sixty-five".