7216766 has 8 divisors (see below), whose sum is σ = 11198520. Its totient is φ = 3483928.

The previous prime is 7216763. The next prime is 7216787. The reversal of 7216766 is 6676127.

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

It is a super-2 number, since 2×7216766² = 104163422997512, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62156 + ... + 62271.

It is an arithmetic number, because the mean of its divisors is an integer number (1399815).

Almost surely, 2^7216766 is an apocalyptic number.

7216766 is a deficient number, since it is larger than the sum of its proper divisors (3981754).

7216766 is a wasteful number, since it uses less digits than its factorization.

7216766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124458.

The product of its digits is 21168, while the sum is 35.

The square root of 7216766 is about 2686.4039160186. The cubic root of 7216766 is about 193.2476440187.

The spelling of 7216766 in words is "seven million, two hundred sixteen thousand, seven hundred sixty-six".