7656660 has 96 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 1854720.

The previous prime is 7656653. The next prime is 7656661. The reversal of 7656660 is 666567.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7656661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5296 + ... + 6584.

It is an arithmetic number, because the mean of its divisors is an integer number (270900).

Almost surely, 2^7656660 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 7656660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13003200).

7656660 is an abundant number, since it is smaller than the sum of its proper divisors (18349740).

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

7656660 is a wasteful number, since it uses less digits than its factorization.

7656660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 7656660 is about 2767.0670393035. The cubic root of 7656660 is about 197.0968971987.

The spelling of 7656660 in words is "seven million, six hundred fifty-six thousand, six hundred sixty".