7661872 has 20 divisors (see below), whose sum is σ = 14913976. Its totient is φ = 3813120.

The previous prime is 7661851. The next prime is 7661881. The reversal of 7661872 is 2781667.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2863 + ... + 4849.

Almost surely, 2^7661872 is an apocalyptic number.

It is an amenable number.

7661872 is a deficient number, since it is larger than the sum of its proper divisors (7252104).

7661872 is a wasteful number, since it uses less digits than its factorization.

7661872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2230 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 7661872 is about 2768.0086705067. The cubic root of 7661872 is about 197.1416092979.

The spelling of 7661872 in words is "seven million, six hundred sixty-one thousand, eight hundred seventy-two".