678660235 has 8 divisors (see below), whose sum is σ = 888428016. Its totient is φ = 493571040.

The previous prime is 678660193. The next prime is 678660239. The reversal of 678660235 is 532066876.

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

It is not a de Polignac number, because 678660235 - 2²³ = 670271627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678660191 and 678660200.

It is not an unprimeable number, because it can be changed into a prime (678660239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6169584 + ... + 6169693.

It is an arithmetic number, because the mean of its divisors is an integer number (111053502).

Almost surely, 2^678660235 is an apocalyptic number.

678660235 is a deficient number, since it is larger than the sum of its proper divisors (209767781).

678660235 is a wasteful number, since it uses less digits than its factorization.

678660235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339293.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 678660235 is about 26051.1081338203. The cubic root of 678660235 is about 878.7880333080.

The spelling of 678660235 in words is "six hundred seventy-eight million, six hundred sixty thousand, two hundred thirty-five".