7266191 has 4 divisors (see below), whose sum is σ = 7693632. Its totient is φ = 6838752.

The previous prime is 7266187. The next prime is 7266197. The reversal of 7266191 is 1916627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1916627 = 41 ⋅46747.

It is a cyclic number.

It is not a de Polignac number, because 7266191 - 2² = 7266187 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 (7266197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213695 + ... + 213728.

It is an arithmetic number, because the mean of its divisors is an integer number (1923408).

Almost surely, 2^7266191 is an apocalyptic number.

7266191 is a deficient number, since it is larger than the sum of its proper divisors (427441).

7266191 is a wasteful number, since it uses less digits than its factorization.

7266191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427440.

The product of its digits is 4536, while the sum is 32.

The square root of 7266191 is about 2695.5873200473. The cubic root of 7266191 is about 193.6878016097.

Adding to 7266191 its product of digits (4536), we get a palindrome (7270727).

The spelling of 7266191 in words is "seven million, two hundred sixty-six thousand, one hundred ninety-one".