973866217 has 2 divisors, whose sum is σ = 973866218. Its totient is φ = 973866216.

The previous prime is 973866211. The next prime is 973866241. The reversal of 973866217 is 712668379.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 762919641 + 210946576 = 27621^2 + 14524^2 .

It is a cyclic number.

It is not a de Polignac number, because 973866217 - 2¹¹ = 973864169 is a prime.

It is a super-2 number, since 2×973866217² = 1896830817227782178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (973866211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486933108 + 486933109.

It is an arithmetic number, because the mean of its divisors is an integer number (486933109).

Almost surely, 2^973866217 is an apocalyptic number.

It is an amenable number.

973866217 is a deficient number, since it is larger than the sum of its proper divisors (1).

973866217 is an equidigital number, since it uses as much as digits as its factorization.

973866217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 973866217 is about 31206.8296531384. The cubic root of 973866217 is about 991.2117315884.

The spelling of 973866217 in words is "nine hundred seventy-three million, eight hundred sixty-six thousand, two hundred seventeen".