68786771 has 4 divisors (see below), whose sum is σ = 68803512. Its totient is φ = 68770032.

The previous prime is 68786761. The next prime is 68786779. The reversal of 68786771 is 17768786.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68786771 - 2²² = 64592467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68786779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (17200878).

Almost surely, 2^68786771 is an apocalyptic number.

68786771 is a deficient number, since it is larger than the sum of its proper divisors (16741).

68786771 is an equidigital number, since it uses as much as digits as its factorization.

68786771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16740.

The product of its digits is 790272, while the sum is 50.

The square root of 68786771 is about 8293.7790542068. The cubic root of 68786771 is about 409.7336580708.

The spelling of 68786771 in words is "sixty-eight million, seven hundred eighty-six thousand, seven hundred seventy-one".