7668720 has 60 divisors (see below), whose sum is σ = 25756536. Its totient is φ = 2044800.

The previous prime is 7668709. The next prime is 7668757. The reversal of 7668720 is 278667.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 4606 + ... + 6045.

Almost surely, 2^7668720 is an apocalyptic number.

It is an amenable number.

7668720 is an abundant number, since it is smaller than the sum of its proper divisors (18087816).

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

7668720 is a wasteful number, since it uses less digits than its factorization.

7668720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670 (or 10661 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7668720 is about 2769.2453845768. The cubic root of 7668720 is about 197.2003253111.

The spelling of 7668720 in words is "seven million, six hundred sixty-eight thousand, seven hundred twenty".