66433197 has 16 divisors (see below), whose sum is σ = 89812800. Its totient is φ = 43675392.

The previous prime is 66433189. The next prime is 66433201. The reversal of 66433197 is 79133466.

It is not a de Polignac number, because 66433197 - 2³ = 66433189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66433097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111733 + ... + 112325.

It is an arithmetic number, because the mean of its divisors is an integer number (5613300).

Almost surely, 2^66433197 is an apocalyptic number.

It is an amenable number.

66433197 is a deficient number, since it is larger than the sum of its proper divisors (23379603).

66433197 is a wasteful number, since it uses less digits than its factorization.

66433197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 81648, while the sum is 39.

The square root of 66433197 is about 8150.6562312491. The cubic root of 66433197 is about 405.0062428545.

The spelling of 66433197 in words is "sixty-six million, four hundred thirty-three thousand, one hundred ninety-seven".