674648678 has 8 divisors (see below), whose sum is σ = 1103970600. Its totient is φ = 306658480.

The previous prime is 674648671. The next prime is 674648683. The reversal of 674648678 is 876846476.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674648671) 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 3 ways as a sum of consecutive naturals, for example, 15332903 + ... + 15332946.

It is an arithmetic number, because the mean of its divisors is an integer number (137996325).

Almost surely, 2^674648678 is an apocalyptic number.

674648678 is a deficient number, since it is larger than the sum of its proper divisors (429321922).

674648678 is a wasteful number, since it uses less digits than its factorization.

674648678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30665862.

The product of its digits is 10838016, while the sum is 56.

The square root of 674648678 is about 25974.0000385000. Note that the first 4 decimals coincide. The cubic root of 674648678 is about 877.0531066438.

The spelling of 674648678 in words is "six hundred seventy-four million, six hundred forty-eight thousand, six hundred seventy-eight".