68377679 has 4 divisors (see below), whose sum is σ = 70735560. Its totient is φ = 66019800.

The previous prime is 68377669. The next prime is 68377693. The reversal of 68377679 is 97677386.

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 68377679 - 2⁴ = 68377663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68377679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68377609) 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, 1178897 + ... + 1178954.

It is an arithmetic number, because the mean of its divisors is an integer number (17683890).

Almost surely, 2^68377679 is an apocalyptic number.

68377679 is a deficient number, since it is larger than the sum of its proper divisors (2357881).

68377679 is a wasteful number, since it uses less digits than its factorization.

68377679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357880.

The product of its digits is 2667168, while the sum is 53.

The square root of 68377679 is about 8269.0796948633. The cubic root of 68377679 is about 408.9197799002.

The spelling of 68377679 in words is "sixty-eight million, three hundred seventy-seven thousand, six hundred seventy-nine".