7266321 has 16 divisors (see below), whose sum is σ = 11233920. Its totient is φ = 4633200.

The previous prime is 7266313. The next prime is 7266349. The reversal of 7266321 is 1236627.

It is a happy number.

7266321 is a `hidden beast` number, since 7 + 26 + 632 + 1 = 666.

It is not a de Polignac number, because 7266321 - 2³ = 7266313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7266221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5230 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (702120).

Almost surely, 2^7266321 is an apocalyptic number.

It is an amenable number.

7266321 is a deficient number, since it is larger than the sum of its proper divisors (3967599).

7266321 is a wasteful number, since it uses less digits than its factorization.

7266321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11733 (or 11727 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 7266321 is about 2695.6114334229. The cubic root of 7266321 is about 193.6889566974.

The spelling of 7266321 in words is "seven million, two hundred sixty-six thousand, three hundred twenty-one".