7253665 has 8 divisors (see below), whose sum is σ = 8939880. Its totient is φ = 5645952.

The previous prime is 7253657. The next prime is 7253669. The reversal of 7253665 is 5663527.

It can be written as a sum of positive squares in 4 ways, for example, as 4028049 + 3225616 = 2007^2 + 1796^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7253665 - 2³ = 7253657 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7253665.

It is not an unprimeable number, because it can be changed into a prime (7253669) 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, 19420 + ... + 19789.

It is an arithmetic number, because the mean of its divisors is an integer number (1117485).

Almost surely, 2^7253665 is an apocalyptic number.

It is an amenable number.

7253665 is a deficient number, since it is larger than the sum of its proper divisors (1686215).

7253665 is a wasteful number, since it uses less digits than its factorization.

7253665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39251.

The product of its digits is 37800, while the sum is 34.

The square root of 7253665 is about 2693.2628909930. The cubic root of 7253665 is about 193.5764397854.

The spelling of 7253665 in words is "seven million, two hundred fifty-three thousand, six hundred sixty-five".