68642859 has 8 divisors (see below), whose sum is σ = 92363920. Its totient is φ = 45341856.

The previous prime is 68642857. The next prime is 68642887. The reversal of 68642859 is 95824686.

It is a happy number.

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

It is not a de Polignac number, because 68642859 - 2¹ = 68642857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68642857) 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, 104632 + ... + 105285.

It is an arithmetic number, because the mean of its divisors is an integer number (11545490).

Almost surely, 2^68642859 is an apocalyptic number.

68642859 is a deficient number, since it is larger than the sum of its proper divisors (23721061).

68642859 is a wasteful number, since it uses less digits than its factorization.

68642859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210029.

The product of its digits is 829440, while the sum is 48.

The square root of 68642859 is about 8285.0986113625. The cubic root of 68642859 is about 409.4477176264.

The spelling of 68642859 in words is "sixty-eight million, six hundred forty-two thousand, eight hundred fifty-nine".