971217 has 16 divisors (see below), whose sum is σ = 1550080. Its totient is φ = 597456.

The previous prime is 971207. The next prime is 971237. The reversal of 971217 is 712179.

It is not a de Polignac number, because 971217 - 2⁶ = 971153 is a prime.

It is a super-2 number, since 2×971217² = 1886524922178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033 + ... + 1734.

It is an arithmetic number, because the mean of its divisors is an integer number (96880).

2⁹⁷¹²¹⁷ is an apocalyptic number.

It is an amenable number.

971217 is a deficient number, since it is larger than the sum of its proper divisors (578863).

971217 is a wasteful number, since it uses less digits than its factorization.

971217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789 (or 2783 counting only the distinct ones).

The product of its digits is 882, while the sum is 27.

The square root of 971217 is about 985.5034246516. The cubic root of 971217 is about 99.0312114630.

The spelling of 971217 in words is "nine hundred seventy-one thousand, two hundred seventeen".