68500061 has 16 divisors (see below), whose sum is σ = 81525504. Its totient is φ = 56329344.

The previous prime is 68500051. The next prime is 68500067. The reversal of 68500061 is 16000586.

It is a cyclic number.

It is not a de Polignac number, because 68500061 - 2²² = 64305757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68500061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68500067) 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, 17096 + ... + 20718.

It is an arithmetic number, because the mean of its divisors is an integer number (5095344).

Almost surely, 2^68500061 is an apocalyptic number.

It is an amenable number.

68500061 is a deficient number, since it is larger than the sum of its proper divisors (13025443).

68500061 is a wasteful number, since it uses less digits than its factorization.

68500061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 68500061 is about 8276.4763637674. The cubic root of 68500061 is about 409.1635953015.

The spelling of 68500061 in words is "sixty-eight million, five hundred thousand, sixty-one".