68828377 has 4 divisors (see below), whose sum is σ = 69459940. Its totient is φ = 68196816.

The previous prime is 68828341. The next prime is 68828447. The reversal of 68828377 is 77382886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48497296 + 20331081 = 6964^2 + 4509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68828377 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 68828377.

It is not an unprimeable number, because it can be changed into a prime (68828077) 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, 315618 + ... + 315835.

It is an arithmetic number, because the mean of its divisors is an integer number (17364985).

Almost surely, 2^68828377 is an apocalyptic number.

It is an amenable number.

68828377 is a deficient number, since it is larger than the sum of its proper divisors (631563).

68828377 is a wasteful number, since it uses less digits than its factorization.

68828377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631562.

The product of its digits is 903168, while the sum is 49.

The square root of 68828377 is about 8296.2869405536. The cubic root of 68828377 is about 409.8162511936.

The spelling of 68828377 in words is "sixty-eight million, eight hundred twenty-eight thousand, three hundred seventy-seven".