66163433 has 8 divisors (see below), whose sum is σ = 78903168. Its totient is φ = 54245664.

The previous prime is 66163429. The next prime is 66163457. The reversal of 66163433 is 33436166.

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

It is a cyclic number.

It is not a de Polignac number, because 66163433 - 2² = 66163429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66163433.

It is not an unprimeable number, because it can be changed into a prime (66163403) 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, 205316 + ... + 205637.

It is an arithmetic number, because the mean of its divisors is an integer number (9862896).

Almost surely, 2^66163433 is an apocalyptic number.

It is an amenable number.

66163433 is a deficient number, since it is larger than the sum of its proper divisors (12739735).

66163433 is a wasteful number, since it uses less digits than its factorization.

66163433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410983.

The product of its digits is 23328, while the sum is 32.

The square root of 66163433 is about 8134.0907912317. The cubic root of 66163433 is about 404.4572988111.

Adding to 66163433 its reverse (33436166), we get a palindrome (99599599).

The spelling of 66163433 in words is "sixty-six million, one hundred sixty-three thousand, four hundred thirty-three".