197678868 has 24 divisors (see below), whose sum is σ = 461690880. Its totient is φ = 65830080.

The previous prime is 197678863. The next prime is 197678881. The reversal of 197678868 is 868876791.

It is a super-2 number, since 2×197678868² = 78153869707522848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197678861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6253 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (19237120).

Almost surely, 2^197678868 is an apocalyptic number.

It is an amenable number.

197678868 is an abundant number, since it is smaller than the sum of its proper divisors (264012012).

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

197678868 is a wasteful number, since it uses less digits than its factorization.

197678868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15727 (or 15725 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 60.

The square root of 197678868 is about 14059.8317201878. The cubic root of 197678868 is about 582.5323950621.

The spelling of 197678868 in words is "one hundred ninety-seven million, six hundred seventy-eight thousand, eight hundred sixty-eight".