755666197 has 16 divisors (see below), whose sum is σ = 890664768. Its totient is φ = 632062080.

The previous prime is 755666189. The next prime is 755666257. The reversal of 755666197 is 791666557.

It is a happy number.

It is not a de Polignac number, because 755666197 - 2³ = 755666189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755666117) 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 15 ways as a sum of consecutive naturals, for example, 36318 + ... + 53200.

It is an arithmetic number, because the mean of its divisors is an integer number (55666548).

Almost surely, 2^755666197 is an apocalyptic number.

It is an amenable number.

755666197 is a deficient number, since it is larger than the sum of its proper divisors (134998571).

755666197 is a wasteful number, since it uses less digits than its factorization.

755666197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17220.

The product of its digits is 2381400, while the sum is 52.

The square root of 755666197 is about 27489.3833506683. The cubic root of 755666197 is about 910.8425947731.

The spelling of 755666197 in words is "seven hundred fifty-five million, six hundred sixty-six thousand, one hundred ninety-seven".