7224621 has 8 divisors (see below), whose sum is σ = 9651264. Its totient is φ = 4807200.

The previous prime is 7224611. The next prime is 7224641. The reversal of 7224621 is 1264227.

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

It is not a de Polignac number, because 7224621 - 2⁶ = 7224557 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7224591 and 7224600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 3806.

It is an arithmetic number, because the mean of its divisors is an integer number (1206408).

Almost surely, 2^7224621 is an apocalyptic number.

It is an amenable number.

7224621 is a deficient number, since it is larger than the sum of its proper divisors (2426643).

7224621 is a wasteful number, since it uses less digits than its factorization.

7224621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611.

The product of its digits is 1344, while the sum is 24.

The square root of 7224621 is about 2687.8655100284. The cubic root of 7224621 is about 193.3177312684.

Adding to 7224621 its reverse (1264227), we get a palindrome (8488848).

The spelling of 7224621 in words is "seven million, two hundred twenty-four thousand, six hundred twenty-one".