655360197 has 4 divisors (see below), whose sum is σ = 873813600. Its totient is φ = 436906796.

The previous prime is 655360171. The next prime is 655360207. The reversal of 655360197 is 791063556.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655360197 - 2¹¹ = 655358149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655364197) 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, 109226697 + ... + 109226702.

It is an arithmetic number, because the mean of its divisors is an integer number (218453400).

Almost surely, 2^655360197 is an apocalyptic number.

It is an amenable number.

655360197 is a deficient number, since it is larger than the sum of its proper divisors (218453403).

655360197 is a wasteful number, since it uses less digits than its factorization.

655360197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218453402.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 655360197 is about 25600.0038476560. The cubic root of 655360197 is about 868.6137243449.

The spelling of 655360197 in words is "six hundred fifty-five million, three hundred sixty thousand, one hundred ninety-seven".