68700279 has 16 divisors (see below), whose sum is σ = 92997632. Its totient is φ = 45106848.

The previous prime is 68700253. The next prime is 68700299. The reversal of 68700279 is 97200786.

It is not a de Polignac number, because 68700279 - 2¹² = 68696183 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68700209) 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 15 ways as a sum of consecutive naturals, for example, 68409 + ... + 69405.

It is an arithmetic number, because the mean of its divisors is an integer number (5812352).

Almost surely, 2^68700279 is an apocalyptic number.

68700279 is a deficient number, since it is larger than the sum of its proper divisors (24297353).

68700279 is a wasteful number, since it uses less digits than its factorization.

68700279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 68700279 is about 8288.5631444781. The cubic root of 68700279 is about 409.5618539731.

The spelling of 68700279 in words is "sixty-eight million, seven hundred thousand, two hundred seventy-nine".