432170666 has 4 divisors (see below), whose sum is σ = 648256002. Its totient is φ = 216085332.

The previous prime is 432170663. The next prime is 432170671. The reversal of 432170666 is 666071234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666071234 = 2 ⋅333035617.

It can be written as a sum of positive squares in only one way, i.e., 348905041 + 83265625 = 18679^2 + 9125^2 .

It is not an unprimeable number, because it can be changed into a prime (432170663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108042665 + ... + 108042668.

Almost surely, 2^432170666 is an apocalyptic number.

432170666 is a deficient number, since it is larger than the sum of its proper divisors (216085336).

432170666 is a wasteful number, since it uses less digits than its factorization.

432170666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216085335.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 432170666 is about 20788.7148712950. The cubic root of 432170666 is about 756.0521657592.

The spelling of 432170666 in words is "four hundred thirty-two million, one hundred seventy thousand, six hundred sixty-six".