68779243 has 4 divisors (see below), whose sum is σ = 74069968. Its totient is φ = 63488520.

The previous prime is 68779241. The next prime is 68779247. The reversal of 68779243 is 34297786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34297786 = 2 ⋅17148893.

It is a cyclic number.

It is not a de Polignac number, because 68779243 - 2¹ = 68779241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68779193 and 68779202.

It is not an unprimeable number, because it can be changed into a prime (68779241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645343 + ... + 2645368.

It is an arithmetic number, because the mean of its divisors is an integer number (18517492).

Almost surely, 2^68779243 is an apocalyptic number.

68779243 is a deficient number, since it is larger than the sum of its proper divisors (5290725).

68779243 is a wasteful number, since it uses less digits than its factorization.

68779243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290724.

The product of its digits is 508032, while the sum is 46.

The square root of 68779243 is about 8293.3252076595. The cubic root of 68779243 is about 409.7187104898.

The spelling of 68779243 in words is "sixty-eight million, seven hundred seventy-nine thousand, two hundred forty-three".