7266665 has 8 divisors (see below), whose sum is σ = 9965760. Its totient is φ = 4982832.

The previous prime is 7266661. The next prime is 7266673. The reversal of 7266665 is 5666627.

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 7266665 - 2² = 7266661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7266661) 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, 103775 + ... + 103844.

It is an arithmetic number, because the mean of its divisors is an integer number (1245720).

Almost surely, 2^7266665 is an apocalyptic number.

It is an amenable number.

7266665 is a deficient number, since it is larger than the sum of its proper divisors (2699095).

7266665 is a wasteful number, since it uses less digits than its factorization.

7266665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207631.

The product of its digits is 90720, while the sum is 38.

The square root of 7266665 is about 2695.6752400836. The cubic root of 7266665 is about 193.6920131708.

Subtracting from 7266665 its sum of digits (38), we obtain a palindrome (7266627).

The spelling of 7266665 in words is "seven million, two hundred sixty-six thousand, six hundred sixty-five".