68880079 has 4 divisors (see below), whose sum is σ = 68947920. Its totient is φ = 68812240.

The previous prime is 68880067. The next prime is 68880113. The reversal of 68880079 is 97008886.

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 68880079 - 2⁹ = 68879567 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 (68886079) 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, 32374 + ... + 34435.

It is an arithmetic number, because the mean of its divisors is an integer number (17236980).

Almost surely, 2^68880079 is an apocalyptic number.

68880079 is a deficient number, since it is larger than the sum of its proper divisors (67841).

68880079 is a wasteful number, since it uses less digits than its factorization.

68880079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67840.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 68880079 is about 8299.4023278788. The cubic root of 68880079 is about 409.9188397750.

The spelling of 68880079 in words is "sixty-eight million, eight hundred eighty thousand, seventy-nine".