68742789 has 16 divisors (see below), whose sum is σ = 95472000. Its totient is φ = 43942976.

The previous prime is 68742769. The next prime is 68742797. The reversal of 68742789 is 98724786.

It is a cyclic number.

It is not a de Polignac number, because 68742789 - 2²⁰ = 67694213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68742769) 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, 10312 + ... + 15614.

It is an arithmetic number, because the mean of its divisors is an integer number (5967000).

Almost surely, 2^68742789 is an apocalyptic number.

It is an amenable number.

68742789 is a deficient number, since it is larger than the sum of its proper divisors (26729211).

68742789 is a wasteful number, since it uses less digits than its factorization.

68742789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484.

The product of its digits is 1354752, while the sum is 51.

The square root of 68742789 is about 8291.1271248245. The cubic root of 68742789 is about 409.6463120706.

The spelling of 68742789 in words is "sixty-eight million, seven hundred forty-two thousand, seven hundred eighty-nine".