197404863 has 8 divisors (see below), whose sum is σ = 265279488. Its totient is φ = 130566744.

The previous prime is 197404859. The next prime is 197404871. The reversal of 197404863 is 368404791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197404863 - 2² = 197404859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197404853) 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, 258681 + ... + 259442.

It is an arithmetic number, because the mean of its divisors is an integer number (33159936).

Almost surely, 2^197404863 is an apocalyptic number.

197404863 is a deficient number, since it is larger than the sum of its proper divisors (67874625).

197404863 is a wasteful number, since it uses less digits than its factorization.

197404863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518253.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 197404863 is about 14050.0840922750. The cubic root of 197404863 is about 582.2631189439.

The spelling of 197404863 in words is "one hundred ninety-seven million, four hundred four thousand, eight hundred sixty-three".