7661944 has 16 divisors (see below), whose sum is σ = 14991120. Its totient is φ = 3664320.

The previous prime is 7661939. The next prime is 7661947. The reversal of 7661944 is 4491667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20637 + ... + 21004.

It is an arithmetic number, because the mean of its divisors is an integer number (936945).

Almost surely, 2^7661944 is an apocalyptic number.

It is an amenable number.

7661944 is a deficient number, since it is larger than the sum of its proper divisors (7329176).

7661944 is a wasteful number, since it uses less digits than its factorization.

7661944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41670 (or 41666 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 7661944 is about 2768.0216762157. The cubic root of 7661944 is about 197.1422268211.

The spelling of 7661944 in words is "seven million, six hundred sixty-one thousand, nine hundred forty-four".