675217221 has 32 divisors (see below), whose sum is σ = 1042649088. Its totient is φ = 380712960.

The previous prime is 675217199. The next prime is 675217229. The reversal of 675217221 is 122712576.

It is not a de Polignac number, because 675217221 - 2⁵ = 675217189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675217229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1053061 + ... + 1053701.

It is an arithmetic number, because the mean of its divisors is an integer number (32582784).

Almost surely, 2^675217221 is an apocalyptic number.

It is an amenable number.

675217221 is a deficient number, since it is larger than the sum of its proper divisors (367431867).

675217221 is a wasteful number, since it uses less digits than its factorization.

675217221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its digits is 11760, while the sum is 33.

The square root of 675217221 is about 25984.9421973573. The cubic root of 675217221 is about 877.2994088618.

Adding to 675217221 its reverse (122712576), we get a palindrome (797929797).

The spelling of 675217221 in words is "six hundred seventy-five million, two hundred seventeen thousand, two hundred twenty-one".