68028279 has 32 divisors (see below), whose sum is σ = 102187008. Its totient is φ = 39900000.

The previous prime is 68028277. The next prime is 68028281. The reversal of 68028279 is 97282086.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68028277) and next prime (68028281).

It is not a de Polignac number, because 68028279 - 2¹ = 68028277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68028279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68028277) 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 31 ways as a sum of consecutive naturals, for example, 270904 + ... + 271154.

It is an arithmetic number, because the mean of its divisors is an integer number (3193344).

Almost surely, 2^68028279 is an apocalyptic number.

68028279 is a deficient number, since it is larger than the sum of its proper divisors (34158729).

68028279 is a wasteful number, since it uses less digits than its factorization.

68028279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 68028279 is about 8247.9257392389. The cubic root of 68028279 is about 408.2220832936. Note that the first 3 decimals are identical.

It can be divided in two parts, 680282 and 79, that added together give a triangular number (680361 = T₁₁₆₆).

The spelling of 68028279 in words is "sixty-eight million, twenty-eight thousand, two hundred seventy-nine".