678872196 has 36 divisors (see below), whose sum is σ = 1720747392. Its totient is φ = 225669744.

The previous prime is 678872191. The next prime is 678872197. The reversal of 678872196 is 691278876.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (678872191) 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, 12480 + ... + 38903.

Almost surely, 2^678872196 is an apocalyptic number.

It is an amenable number.

678872196 is an abundant number, since it is smaller than the sum of its proper divisors (1041875196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678872196 is a wasteful number, since it uses less digits than its factorization.

678872196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51760 (or 51755 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 678872196 is about 26055.1759924972. The cubic root of 678872196 is about 878.8795122701.

The spelling of 678872196 in words is "six hundred seventy-eight million, eight hundred seventy-two thousand, one hundred ninety-six".