68878211 has 16 divisors (see below), whose sum is σ = 74876160. Its totient is φ = 63154080.

The previous prime is 68878177. The next prime is 68878223. The reversal of 68878211 is 11287886.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68878211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68878231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77210 + ... + 78096.

It is an arithmetic number, because the mean of its divisors is an integer number (4679760).

Almost surely, 2^68878211 is an apocalyptic number.

68878211 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

68878211 is a deficient number, since it is larger than the sum of its proper divisors (5997949).

68878211 is a wasteful number, since it uses less digits than its factorization.

68878211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its digits is 43008, while the sum is 41.

The square root of 68878211 is about 8299.2897888916. The cubic root of 68878211 is about 409.9151341303.

The spelling of 68878211 in words is "sixty-eight million, eight hundred seventy-eight thousand, two hundred eleven".