197698081 has 8 divisors (see below), whose sum is σ = 226083584. Its totient is φ = 169348320.

The previous prime is 197698073. The next prime is 197698091. The reversal of 197698081 is 180896791.

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

It is a cyclic number.

It is not a de Polignac number, because 197698081 - 2³ = 197698073 is a prime.

It is a super-2 number, since 2×197698081² = 78169062462165122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197698031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4216 + ... + 20326.

It is an arithmetic number, because the mean of its divisors is an integer number (28260448).

Almost surely, 2^197698081 is an apocalyptic number.

It is an amenable number.

197698081 is a deficient number, since it is larger than the sum of its proper divisors (28385503).

197698081 is a wasteful number, since it uses less digits than its factorization.

197698081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17871.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 197698081 is about 14060.5149621200. The cubic root of 197698081 is about 582.5512671388.

The spelling of 197698081 in words is "one hundred ninety-seven million, six hundred ninety-eight thousand, eighty-one".