197655601 has 8 divisors (see below), whose sum is σ = 232210944. Its totient is φ = 165864720.

The previous prime is 197655571. The next prime is 197655607. The reversal of 197655601 is 106556791.

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 197655601 - 2⁵ = 197655569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197655607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690961 + ... + 691246.

It is an arithmetic number, because the mean of its divisors is an integer number (29026368).

Almost surely, 2^197655601 is an apocalyptic number.

197655601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

197655601 is a deficient number, since it is larger than the sum of its proper divisors (34555343).

197655601 is a wasteful number, since it uses less digits than its factorization.

197655601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382231.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 197655601 is about 14059.0042677282. The cubic root of 197655601 is about 582.5095392839.

The spelling of 197655601 in words is "one hundred ninety-seven million, six hundred fifty-five thousand, six hundred one".