678998133 has 24 divisors (see below), whose sum is σ = 1109568096. Its totient is φ = 411512400.

The previous prime is 678998113. The next prime is 678998147. The reversal of 678998133 is 331899876.

It is not a de Polignac number, because 678998133 - 2⁵ = 678998101 is a prime.

It is a super-2 number, since 2×678998133² = 922076929234971378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 678998133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678998113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124338 + ... + 129683.

It is an arithmetic number, because the mean of its divisors is an integer number (46232004).

Almost surely, 2^678998133 is an apocalyptic number.

It is an amenable number.

678998133 is a deficient number, since it is larger than the sum of its proper divisors (430569963).

678998133 is a wasteful number, since it uses less digits than its factorization.

678998133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254047 (or 254035 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 678998133 is about 26057.5926171241. The cubic root of 678998133 is about 878.9338556385.

The spelling of 678998133 in words is "six hundred seventy-eight million, nine hundred ninety-eight thousand, one hundred thirty-three".