678342811 has 8 divisors (see below), whose sum is σ = 685165824. Its totient is φ = 671553000.

The previous prime is 678342809. The next prime is 678342817. The reversal of 678342811 is 118243876.

678342811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 678342811 - 2¹ = 678342809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678342817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33826 + ... + 50008.

It is an arithmetic number, because the mean of its divisors is an integer number (85645728).

Almost surely, 2^678342811 is an apocalyptic number.

678342811 is a deficient number, since it is larger than the sum of its proper divisors (6823013).

678342811 is a wasteful number, since it uses less digits than its factorization.

678342811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16601.

The product of its digits is 64512, while the sum is 40.

The square root of 678342811 is about 26045.0150892642. The cubic root of 678342811 is about 878.6510025821.

It can be divided in two parts, 6783 and 42811, that added together give a palindrome (49594).

The spelling of 678342811 in words is "six hundred seventy-eight million, three hundred forty-two thousand, eight hundred eleven".