7672221 has 24 divisors (see below), whose sum is σ = 11591424. Its totient is φ = 4884480.

The previous prime is 7672201. The next prime is 7672229. The reversal of 7672221 is 1222767.

7672221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7672221 - 2¹³ = 7664029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7672229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29725 + ... + 29981.

It is an arithmetic number, because the mean of its divisors is an integer number (482976).

Almost surely, 2^7672221 is an apocalyptic number.

It is an amenable number.

7672221 is a deficient number, since it is larger than the sum of its proper divisors (3919203).

7672221 is a wasteful number, since it uses less digits than its factorization.

7672221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

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

The square root of 7672221 is about 2769.8774341115. The cubic root of 7672221 is about 197.2303300274.

Adding to 7672221 its reverse (1222767), we get a palindrome (8894988).

The spelling of 7672221 in words is "seven million, six hundred seventy-two thousand, two hundred twenty-one".