66229197 has 8 divisors (see below), whose sum is σ = 88366560. Its totient is φ = 44122320.

The previous prime is 66229169. The next prime is 66229201. The reversal of 66229197 is 79192266.

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

It is not a de Polignac number, because 66229197 - 2⁸ = 66228941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66229147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1947 + ... + 11672.

It is an arithmetic number, because the mean of its divisors is an integer number (11045820).

Almost surely, 2^66229197 is an apocalyptic number.

It is an amenable number.

66229197 is a deficient number, since it is larger than the sum of its proper divisors (22137363).

66229197 is a wasteful number, since it uses less digits than its factorization.

66229197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15243.

The product of its digits is 81648, while the sum is 42.

The square root of 66229197 is about 8138.1322795836. The cubic root of 66229197 is about 404.5912596247.

The spelling of 66229197 in words is "sixty-six million, two hundred twenty-nine thousand, one hundred ninety-seven".