678198852 has 24 divisors (see below), whose sum is σ = 1758293600. Its totient is φ = 226066248.

The previous prime is 678198841. The next prime is 678198853. The reversal of 678198852 is 258891876.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (678198853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139702 + ... + 3139917.

Almost surely, 2^678198852 is an apocalyptic number.

It is an amenable number.

678198852 is an abundant number, since it is smaller than the sum of its proper divisors (1080094748).

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

678198852 is a wasteful number, since it uses less digits than its factorization.

678198852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6279632 (or 6279624 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 678198852 is about 26042.2512851712. The cubic root of 678198852 is about 878.5888419426.

The spelling of 678198852 in words is "six hundred seventy-eight million, one hundred ninety-eight thousand, eight hundred fifty-two".