7628644 has 9 divisors (see below), whose sum is σ = 13359801. Its totient is φ = 3811560.

The previous prime is 7628629. The next prime is 7628657. The reversal of 7628644 is 4468267.

The square root of 7628644 is 2762.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3467044 + 4161600 = 1862^2 + 2040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4834 + ... + 6214.

Almost surely, 2^7628644 is an apocalyptic number.

7628644 is the 2762-nd square number.

It is an amenable number.

7628644 is a deficient number, since it is larger than the sum of its proper divisors (5731157).

7628644 is an equidigital number, since it uses as much as digits as its factorization.

7628644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 1383 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The cubic root of 7628644 is about 196.8562084693.

The spelling of 7628644 in words is "seven million, six hundred twenty-eight thousand, six hundred forty-four".