7840680 has 64 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 2074368.

The previous prime is 7840667. The next prime is 7840691. The reversal of 7840680 is 860487.

It is a super-2 number, since 2×7840680² = 122952525724800, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26614 + ... + 26906.

It is an arithmetic number, because the mean of its divisors is an integer number (370440).

Almost surely, 2^7840680 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 7840680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11854080).

7840680 is an abundant number, since it is smaller than the sum of its proper divisors (15867480).

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

7840680 is a wasteful number, since it uses less digits than its factorization.

7840680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 7840680 is about 2800.1214259385. The cubic root of 7840680 is about 198.6634210141.

The spelling of 7840680 in words is "seven million, eight hundred forty thousand, six hundred eighty".