655197601 has 8 divisors (see below), whose sum is σ = 663564384. Its totient is φ = 646842240.

The previous prime is 655197563. The next prime is 655197611. The reversal of 655197601 is 106791556.

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

It is not a de Polignac number, because 655197601 - 2⁹ = 655197089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655197611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219046 + ... + 222016.

It is an arithmetic number, because the mean of its divisors is an integer number (82945548).

Almost surely, 2^655197601 is an apocalyptic number.

It is an amenable number.

655197601 is a deficient number, since it is larger than the sum of its proper divisors (8366783).

655197601 is a wasteful number, since it uses less digits than its factorization.

655197601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711.

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

The square root of 655197601 is about 25596.8279480095. The cubic root of 655197601 is about 868.5418835468.

The spelling of 655197601 in words is "six hundred fifty-five million, one hundred ninety-seven thousand, six hundred one".