7660840 has 64 divisors (see below), whose sum is σ = 19647360. Its totient is φ = 2661120.

The previous prime is 7660823. The next prime is 7660841. The reversal of 7660840 is 480667.

It is not an unprimeable number, because it can be changed into a prime (7660841) 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 15 ways as a sum of consecutive naturals, for example, 9742 + ... + 10498.

It is an arithmetic number, because the mean of its divisors is an integer number (306990).

Almost surely, 2^7660840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7660840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9823680).

7660840 is an abundant number, since it is smaller than the sum of its proper divisors (11986520).

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

7660840 is a wasteful number, since it uses less digits than its factorization.

7660840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 7660840 is about 2767.8222486280. The cubic root of 7660840 is about 197.1327577067.

The spelling of 7660840 in words is "seven million, six hundred sixty thousand, eight hundred forty".