7166641 has 8 divisors (see below), whose sum is σ = 7432040. Its totient is φ = 6905088.

The previous prime is 7166633. The next prime is 7166647. The reversal of 7166641 is 1466617.

It can be written as a sum of positive squares in 4 ways, for example, as 3150625 + 4016016 = 1775^2 + 2004^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7166641 - 2³ = 7166633 is a prime.

It is a super-3 number, since 3×7166641³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7166647) 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 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (929005).

Almost surely, 2^7166641 is an apocalyptic number.

It is an amenable number.

7166641 is a deficient number, since it is larger than the sum of its proper divisors (265399).

7166641 is a wasteful number, since it uses less digits than its factorization.

7166641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its digits is 6048, while the sum is 31.

The square root of 7166641 is about 2677.0582735533. The cubic root of 7166641 is about 192.7991951580.

The spelling of 7166641 in words is "seven million, one hundred sixty-six thousand, six hundred forty-one".