7648644 has 24 divisors (see below), whose sum is σ = 18033568. Its totient is φ = 2522880.

The previous prime is 7648643. The next prime is 7648649. The reversal of 7648644 is 4468467.

It is not an unprimeable number, because it can be changed into a prime (7648643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122 + ... + 4449.

Almost surely, 2^7648644 is an apocalyptic number.

It is an amenable number.

7648644 is an abundant number, since it is smaller than the sum of its proper divisors (10384924).

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

7648644 is a wasteful number, since it uses less digits than its factorization.

7648644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675 (or 6673 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 7648644 is about 2765.6181949069. The cubic root of 7648644 is about 197.0280908520.

The spelling of 7648644 in words is "seven million, six hundred forty-eight thousand, six hundred forty-four".