68727641 has 4 divisors (see below), whose sum is σ = 68785332. Its totient is φ = 68669952.

The previous prime is 68727629. The next prime is 68727643. The reversal of 68727641 is 14672786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35952016 + 32775625 = 5996^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 68727641 - 2²⁶ = 1618777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68727643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27020 + ... + 29453.

It is an arithmetic number, because the mean of its divisors is an integer number (17196333).

Almost surely, 2^68727641 is an apocalyptic number.

It is an amenable number.

68727641 is a deficient number, since it is larger than the sum of its proper divisors (57691).

68727641 is a wasteful number, since it uses less digits than its factorization.

68727641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57690.

The product of its digits is 112896, while the sum is 41.

The square root of 68727641 is about 8290.2135678160. The cubic root of 68727641 is about 409.6162202928.

The spelling of 68727641 in words is "sixty-eight million, seven hundred twenty-seven thousand, six hundred forty-one".