68779028 has 6 divisors (see below), whose sum is σ = 120363306. Its totient is φ = 34389512.

The previous prime is 68779027. The next prime is 68779043. The reversal of 68779028 is 82097786.

It can be written as a sum of positive squares in only one way, i.e., 66552964 + 2226064 = 8158^2 + 1492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68779021) 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 as a sum of consecutive naturals, namely, 8597375 + ... + 8597382.

It is an arithmetic number, because the mean of its divisors is an integer number (20060551).

Almost surely, 2^68779028 is an apocalyptic number.

It is an amenable number.

68779028 is a deficient number, since it is larger than the sum of its proper divisors (51584278).

68779028 is a wasteful number, since it uses less digits than its factorization.

68779028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17194761 (or 17194759 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 68779028 is about 8293.3122454180. The cubic root of 68779028 is about 409.7182835702.

The spelling of 68779028 in words is "sixty-eight million, seven hundred seventy-nine thousand, twenty-eight".