68782311 has 32 divisors (see below), whose sum is σ = 110673920. Its totient is φ = 41967072.

The previous prime is 68782303. The next prime is 68782321. The reversal of 68782311 is 11328786.

It is not a de Polignac number, because 68782311 - 2³ = 68782303 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68782321) 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, 43806 + ... + 45348.

It is an arithmetic number, because the mean of its divisors is an integer number (3458560).

Almost surely, 2^68782311 is an apocalyptic number.

68782311 is a deficient number, since it is larger than the sum of its proper divisors (41891609).

68782311 is a wasteful number, since it uses less digits than its factorization.

68782311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692 (or 1686 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 68782311 is about 8293.5101736237. The cubic root of 68782311 is about 409.7248024358.

The spelling of 68782311 in words is "sixty-eight million, seven hundred eighty-two thousand, three hundred eleven".