32020666 has 4 divisors (see below), whose sum is σ = 48031002. Its totient is φ = 16010332.

The previous prime is 32020661. The next prime is 32020691. The reversal of 32020666 is 66602023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66602023 = 151 ⋅441073.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 11363641 = 4545^2 + 3371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 32020666.

It is not an unprimeable number, because it can be changed into a prime (32020661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8005165 + ... + 8005168.

Almost surely, 2^32020666 is an apocalyptic number.

32020666 is a deficient number, since it is larger than the sum of its proper divisors (16010336).

32020666 is a wasteful number, since it uses less digits than its factorization.

32020666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16010335.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 32020666 is about 5658.6805882644. The cubic root of 32020666 is about 317.5485399159.

Adding to 32020666 its reverse (66602023), we get a palindrome (98622689).

The spelling of 32020666 in words is "thirty-two million, twenty thousand, six hundred sixty-six".