66196433 has 2 divisors, whose sum is σ = 66196434. Its totient is φ = 66196432.

The previous prime is 66196423. The next prime is 66196477. The reversal of 66196433 is 33469166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64368529 + 1827904 = 8023^2 + 1352^2 .

It is a cyclic number.

It is not a de Polignac number, because 66196433 - 2²⁴ = 49419217 is a prime.

It is not a weakly prime, because it can be changed into another prime (66196423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33098216 + 33098217.

It is an arithmetic number, because the mean of its divisors is an integer number (33098217).

Almost surely, 2^66196433 is an apocalyptic number.

It is an amenable number.

66196433 is a deficient number, since it is larger than the sum of its proper divisors (1).

66196433 is an equidigital number, since it uses as much as digits as its factorization.

66196433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 66196433 is about 8136.1190379689. The cubic root of 66196433 is about 404.5245306734.

It can be divided in two parts, 661964 and 33, that multiplied together give a palindrome (21844812).

The spelling of 66196433 in words is "sixty-six million, one hundred ninety-six thousand, four hundred thirty-three".