68648885 has 12 divisors (see below), whose sum is σ = 83424972. Its totient is φ = 54230208.

The previous prime is 68648869. The next prime is 68648897. The reversal of 68648885 is 58884686.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 30924721 = 6142^2 + 5561^2 .

It is not a de Polignac number, because 68648885 - 2⁴ = 68648869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33449 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (6952081).

Almost surely, 2^68648885 is an apocalyptic number.

It is an amenable number.

68648885 is a deficient number, since it is larger than the sum of its proper divisors (14776087).

68648885 is an equidigital number, since it uses as much as digits as its factorization.

68648885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164 (or 2081 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 53.

The square root of 68648885 is about 8285.4622683348. The cubic root of 68648885 is about 409.4596987695.

The spelling of 68648885 in words is "sixty-eight million, six hundred forty-eight thousand, eight hundred eighty-five".