68879243 has 4 divisors (see below), whose sum is σ = 68911008. Its totient is φ = 68847480.

The previous prime is 68879233. The next prime is 68879267. The reversal of 68879243 is 34297886.

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 68879243 - 2⁸ = 68878987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68879203) 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 3 ways as a sum of consecutive naturals, for example, 12371 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (17227752).

Almost surely, 2^68879243 is an apocalyptic number.

68879243 is a deficient number, since it is larger than the sum of its proper divisors (31765).

68879243 is a wasteful number, since it uses less digits than its factorization.

68879243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31764.

The product of its digits is 580608, while the sum is 47.

The square root of 68879243 is about 8299.3519626535. The cubic root of 68879243 is about 409.9171813684.

It can be divided in two parts, 688792 and 43, that multiplied together give a triangular number (29618056 = T₇₆₉₆).

The spelling of 68879243 in words is "sixty-eight million, eight hundred seventy-nine thousand, two hundred forty-three".