197983827 has 6 divisors (see below), whose sum is σ = 285976652. Its totient is φ = 131989212.

The previous prime is 197983823. The next prime is 197983829. The reversal of 197983827 is 728389791.

It is not a de Polignac number, because 197983827 - 2² = 197983823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197983823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10999093 + ... + 10999110.

Almost surely, 2^197983827 is an apocalyptic number.

197983827 is a deficient number, since it is larger than the sum of its proper divisors (87992825).

197983827 is a wasteful number, since it uses less digits than its factorization.

197983827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21998209 (or 21998206 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 197983827 is about 14070.6725852036. The cubic root of 197983827 is about 582.8317985406.

The spelling of 197983827 in words is "one hundred ninety-seven million, nine hundred eighty-three thousand, eight hundred twenty-seven".