68626779 has 16 divisors (see below), whose sum is σ = 102826752. Its totient is φ = 40395168.

The previous prime is 68626759. The next prime is 68626783. The reversal of 68626779 is 97762686.

It is not a de Polignac number, because 68626779 - 2¹³ = 68618587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68626709) 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 15 ways as a sum of consecutive naturals, for example, 37357 + ... + 39150.

It is an arithmetic number, because the mean of its divisors is an integer number (6426672).

Almost surely, 2^68626779 is an apocalyptic number.

68626779 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

68626779 is a deficient number, since it is larger than the sum of its proper divisors (34199973).

68626779 is a wasteful number, since it uses less digits than its factorization.

68626779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76546.

The product of its digits is 1524096, while the sum is 51.

The square root of 68626779 is about 8284.1281375894. The cubic root of 68626779 is about 409.4157432712.

It can be divided in two parts, 6862677 and 9, that added together give a palindrome (6862686).

The spelling of 68626779 in words is "sixty-eight million, six hundred twenty-six thousand, seven hundred seventy-nine".