68134979 has 6 divisors (see below), whose sum is σ = 74892300. Its totient is φ = 61940780.

The previous prime is 68134973. The next prime is 68134981. The reversal of 68134979 is 97943186.

It is a de Polignac number, because none of the positive numbers 2^k-68134979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68134973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281429 + ... + 281670.

It is an arithmetic number, because the mean of its divisors is an integer number (12482050).

Almost surely, 2^68134979 is an apocalyptic number.

68134979 is a deficient number, since it is larger than the sum of its proper divisors (6757321).

68134979 is a wasteful number, since it uses less digits than its factorization.

68134979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563121 (or 563110 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 68134979 is about 8254.3914978634. The cubic root of 68134979 is about 408.4353992070.

The spelling of 68134979 in words is "sixty-eight million, one hundred thirty-four thousand, nine hundred seventy-nine".