972217 has 4 divisors (see below), whose sum is σ = 981760. Its totient is φ = 962676.

The previous prime is 972199. The next prime is 972221. The reversal of 972217 is 712279.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972227) 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 in 3 ways as a sum of consecutive naturals, for example, 4617 + ... + 4822.

It is an arithmetic number, because the mean of its divisors is an integer number (245440).

2⁹⁷²²¹⁷ is an apocalyptic number.

It is an amenable number.

972217 is a deficient number, since it is larger than the sum of its proper divisors (9543).

972217 is a wasteful number, since it uses less digits than its factorization.

972217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542.

The product of its digits is 1764, while the sum is 28.

The square root of 972217 is about 986.0106490297. The cubic root of 972217 is about 99.0651885049.

The spelling of 972217 in words is "nine hundred seventy-two thousand, two hundred seventeen".