197865404 has 12 divisors (see below), whose sum is σ = 377743128. Its totient is φ = 89938800.

The previous prime is 197865391. The next prime is 197865407. The reversal of 197865404 is 404568791.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 4496941 = 197865404 / (1 + 9 + 7 + 8 + 6 + 5 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197865407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2248427 + ... + 2248514.

It is an arithmetic number, because the mean of its divisors is an integer number (31478594).

Almost surely, 2^197865404 is an apocalyptic number.

It is an amenable number.

197865404 is a deficient number, since it is larger than the sum of its proper divisors (179877724).

197865404 is a wasteful number, since it uses less digits than its factorization.

197865404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496956 (or 4496954 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 197865404 is about 14066.4638058042. The cubic root of 197865404 is about 582.7155694237.

The spelling of 197865404 in words is "one hundred ninety-seven million, eight hundred sixty-five thousand, four hundred four".