678746255 has 8 divisors (see below), whose sum is σ = 888540624. Its totient is φ = 493633600.

The previous prime is 678746251. The next prime is 678746303. The reversal of 678746255 is 552647876.

678746255 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 not a de Polignac number, because 678746255 - 2² = 678746251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678746251) 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, 6170366 + ... + 6170475.

It is an arithmetic number, because the mean of its divisors is an integer number (111067578).

Almost surely, 2^678746255 is an apocalyptic number.

678746255 is a deficient number, since it is larger than the sum of its proper divisors (209794369).

678746255 is a wasteful number, since it uses less digits than its factorization.

678746255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340857.

The product of its digits is 2822400, while the sum is 50.

The square root of 678746255 is about 26052.7590669395. The cubic root of 678746255 is about 878.8251604541.

The spelling of 678746255 in words is "six hundred seventy-eight million, seven hundred forty-six thousand, two hundred fifty-five".