7121673 has 12 divisors (see below), whose sum is σ = 11078340. Its totient is φ = 4382496.

The previous prime is 7121669. The next prime is 7121683. The reversal of 7121673 is 3761217.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 4052169 = 1752^2 + 2013^2 .

It is not a de Polignac number, because 7121673 - 2² = 7121669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7121603) 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 11 ways as a sum of consecutive naturals, for example, 30318 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (923195).

Almost surely, 2^7121673 is an apocalyptic number.

It is an amenable number.

7121673 is a deficient number, since it is larger than the sum of its proper divisors (3956667).

7121673 is a wasteful number, since it uses less digits than its factorization.

7121673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60888 (or 60885 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 7121673 is about 2668.6462860409. The cubic root of 7121673 is about 192.3951011096.

It can be divided in two parts, 71216 and 73, that added together give a square (71289 = 267²).

The spelling of 7121673 in words is "seven million, one hundred twenty-one thousand, six hundred seventy-three".