66097197 has 12 divisors (see below), whose sum is σ = 95814784. Its totient is φ = 43907400.

The previous prime is 66097189. The next prime is 66097249. The reversal of 66097197 is 79179066.

It is not a de Polignac number, because 66097197 - 2³ = 66097189 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 (66093197) 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, 10429 + ... + 15522.

Almost surely, 2^66097197 is an apocalyptic number.

It is an amenable number.

66097197 is a deficient number, since it is larger than the sum of its proper divisors (29717587).

66097197 is a wasteful number, since it uses less digits than its factorization.

66097197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240 (or 26237 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 66097197 is about 8130.0182656621. The cubic root of 66097197 is about 404.3222867807.

The spelling of 66097197 in words is "sixty-six million, ninety-seven thousand, one hundred ninety-seven".