678198033 has 12 divisors (see below), whose sum is σ = 1022211840. Its totient is φ = 432473976.

The previous prime is 678198019. The next prime is 678198047. The reversal of 678198033 is 330891876.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (678198019) and next prime (678198047).

It is not a de Polignac number, because 678198033 - 2⁶ = 678197969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678198033.

It is not an unprimeable number, because it can be changed into a prime (678198013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1637953 + ... + 1638366.

It is an arithmetic number, because the mean of its divisors is an integer number (85184320).

Almost surely, 2^678198033 is an apocalyptic number.

It is an amenable number.

678198033 is a deficient number, since it is larger than the sum of its proper divisors (344013807).

678198033 is a wasteful number, since it uses less digits than its factorization.

678198033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276348 (or 3276345 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 678198033 is about 26042.2355607194. The cubic root of 678198033 is about 878.5884882781.

The spelling of 678198033 in words is "six hundred seventy-eight million, one hundred ninety-eight thousand, thirty-three".