68776911 has 32 divisors (see below), whose sum is σ = 117611520. Its totient is φ = 38908512.

The previous prime is 68776891. The next prime is 68776913. The reversal of 68776911 is 11967786.

It is not a de Polignac number, because 68776911 - 2⁹ = 68776399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68776913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17701 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (3675360).

Almost surely, 2^68776911 is an apocalyptic number.

68776911 is a deficient number, since it is larger than the sum of its proper divisors (48834609).

68776911 is a wasteful number, since it uses less digits than its factorization.

68776911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652 (or 3646 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 68776911 is about 8293.1846114747. The cubic root of 68776911 is about 409.7140798542.

Subtracting from 68776911 its product of digits (127008), we obtain a triangular number (68649903 = T₁₁₇₁₇).

The spelling of 68776911 in words is "sixty-eight million, seven hundred seventy-six thousand, nine hundred eleven".