7275605 has 4 divisors (see below), whose sum is σ = 8730732. Its totient is φ = 5820480.

The previous prime is 7275601. The next prime is 7275623. The reversal of 7275605 is 5065727.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1999396 + 5276209 = 1414^2 + 2297^2 .

It is not a de Polignac number, because 7275605 - 2² = 7275601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7275601) 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 3 ways as a sum of consecutive naturals, for example, 727556 + ... + 727565.

It is an arithmetic number, because the mean of its divisors is an integer number (2182683).

Almost surely, 2^7275605 is an apocalyptic number.

It is an amenable number.

7275605 is a deficient number, since it is larger than the sum of its proper divisors (1455127).

7275605 is a wasteful number, since it uses less digits than its factorization.

7275605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455126.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 7275605 is about 2697.3329420003. The cubic root of 7275605 is about 193.7714121324.

The spelling of 7275605 in words is "seven million, two hundred seventy-five thousand, six hundred five".