32220817 has 2 divisors, whose sum is σ = 32220818. Its totient is φ = 32220816.

The previous prime is 32220791. The next prime is 32220823. The reversal of 32220817 is 71802223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31708161 + 512656 = 5631^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 32220817 - 2¹⁵ = 32188049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32220791 and 32220800.

It is not a weakly prime, because it can be changed into another prime (32220847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110408 + 16110409.

It is an arithmetic number, because the mean of its divisors is an integer number (16110409).

Almost surely, 2^32220817 is an apocalyptic number.

It is an amenable number.

32220817 is a deficient number, since it is larger than the sum of its proper divisors (1).

32220817 is an equidigital number, since it uses as much as digits as its factorization.

32220817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 32220817 is about 5676.3383443907. The cubic root of 32220817 is about 318.2087977790.

The spelling of 32220817 in words is "thirty-two million, two hundred twenty thousand, eight hundred seventeen".