68798279 has 4 divisors (see below), whose sum is σ = 75052680. Its totient is φ = 62543880.

The previous prime is 68798239. The next prime is 68798311. The reversal of 68798279 is 97289786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68798279 - 2¹² = 68794183 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 (68798209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127184 + ... + 3127205.

It is an arithmetic number, because the mean of its divisors is an integer number (18763170).

Almost surely, 2^68798279 is an apocalyptic number.

68798279 is a deficient number, since it is larger than the sum of its proper divisors (6254401).

68798279 is a wasteful number, since it uses less digits than its factorization.

68798279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254400.

The product of its digits is 3048192, while the sum is 56.

The square root of 68798279 is about 8294.4727981952. The cubic root of 68798279 is about 409.7565062239.

The spelling of 68798279 in words is "sixty-eight million, seven hundred ninety-eight thousand, two hundred seventy-nine".