7225644 has 12 divisors (see below), whose sum is σ = 16859864. Its totient is φ = 2408544.

The previous prime is 7225607. The next prime is 7225651. The reversal of 7225644 is 4465227.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 7⁷ + 2⁹ + 2¹⁹ + 5⁵ + 6⁸ + 4⁴ + 4¹¹ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301057 + ... + 301080.

Almost surely, 2^7225644 is an apocalyptic number.

It is an amenable number.

7225644 is an abundant number, since it is smaller than the sum of its proper divisors (9634220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7225644 is a wasteful number, since it uses less digits than its factorization.

7225644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602144 (or 602142 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 7225644 is about 2688.0558029922. The cubic root of 7225644 is about 193.3268553781.

The spelling of 7225644 in words is "seven million, two hundred twenty-five thousand, six hundred forty-four".