7227621 has 12 divisors (see below), whose sum is σ = 10472748. Its totient is φ = 4803264.

The previous prime is 7227551. The next prime is 7227667. The reversal of 7227621 is 1267227.

It can be written as a sum of positive squares in 2 ways, for example, as 1988100 + 5239521 = 1410^2 + 2289^2 .

It is not a de Polignac number, because 7227621 - 2⁹ = 7227109 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

7227621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7227721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2281 + ... + 4433.

It is an arithmetic number, because the mean of its divisors is an integer number (872729).

Almost surely, 2^7227621 is an apocalyptic number.

It is an amenable number.

7227621 is a deficient number, since it is larger than the sum of its proper divisors (3245127).

7227621 is a wasteful number, since it uses less digits than its factorization.

7227621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532 (or 2529 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 7227621 is about 2688.4235157430. The cubic root of 7227621 is about 193.3444857485.

The spelling of 7227621 in words is "seven million, two hundred twenty-seven thousand, six hundred twenty-one".