68406228727 has 8 divisors (see below), whose sum is σ = 68682097440. Its totient is φ = 68130480000.

The previous prime is 68406228721. The next prime is 68406228739. The reversal of 68406228727 is 72782260486.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68406228727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68406228721) 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, 1216227 + ... + 1271227.

It is an arithmetic number, because the mean of its divisors is an integer number (8585262180).

Almost surely, 2^68406228727 is an apocalyptic number.

68406228727 is a deficient number, since it is larger than the sum of its proper divisors (275868713).

68406228727 is a wasteful number, since it uses less digits than its factorization.

68406228727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59993.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 68406228727 in words is "sixty-eight billion, four hundred six million, two hundred twenty-eight thousand, seven hundred twenty-seven".