655804197 has 12 divisors (see below), whose sum is σ = 947816064. Its totient is φ = 436952040.

The previous prime is 655804183. The next prime is 655804217. The reversal of 655804197 is 791408556.

655804197 is a `hidden beast` number, since 6 + 558 + 0 + 4 + 1 + 97 = 666.

655804197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655804197 - 2⁴ = 655804181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655814197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3579 + ... + 36392.

It is an arithmetic number, because the mean of its divisors is an integer number (78984672).

Almost surely, 2^655804197 is an apocalyptic number.

It is an amenable number.

655804197 is a deficient number, since it is larger than the sum of its proper divisors (292011867).

655804197 is a wasteful number, since it uses less digits than its factorization.

655804197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41800 (or 41797 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 655804197 is about 25608.6742530729. The cubic root of 655804197 is about 868.8098391092.

The spelling of 655804197 in words is "six hundred fifty-five million, eight hundred four thousand, one hundred ninety-seven".