68739879 has 8 divisors (see below), whose sum is σ = 98703472. Its totient is φ = 42301440.

The previous prime is 68739877. The next prime is 68739899. The reversal of 68739879 is 97893786.

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

It is not a de Polignac number, because 68739879 - 2¹ = 68739877 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 (68739877) 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, 881242 + ... + 881319.

It is an arithmetic number, because the mean of its divisors is an integer number (12337934).

Almost surely, 2^68739879 is an apocalyptic number.

68739879 is a deficient number, since it is larger than the sum of its proper divisors (29963593).

68739879 is a wasteful number, since it uses less digits than its factorization.

68739879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762577.

The product of its digits is 4572288, while the sum is 57.

The square root of 68739879 is about 8290.9516341612. The cubic root of 68739879 is about 409.6405316457.

The spelling of 68739879 in words is "sixty-eight million, seven hundred thirty-nine thousand, eight hundred seventy-nine".