678000794 has 4 divisors (see below), whose sum is σ = 1017001194. Its totient is φ = 339000396.

The previous prime is 678000793. The next prime is 678000833. The reversal of 678000794 is 497000876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 458516569 + 219484225 = 21413^2 + 14815^2 .

It is not an unprimeable number, because it can be changed into a prime (678000793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169500197 + ... + 169500200.

Almost surely, 2^678000794 is an apocalyptic number.

678000794 is a deficient number, since it is larger than the sum of its proper divisors (339000400).

678000794 is a wasteful number, since it uses less digits than its factorization.

678000794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339000399.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 678000794 is about 26038.4483792718. The cubic root of 678000794 is about 878.5033072993.

The spelling of 678000794 in words is "six hundred seventy-eight million, seven hundred ninety-four", and thus it is an aban number.