7645660 has 48 divisors (see below), whose sum is σ = 18289152. Its totient is φ = 2657600.

The previous prime is 7645607. The next prime is 7645661. The reversal of 7645660 is 665467.

7645660 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7645660² = 116912233671200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7645661) by changing a digit.

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, 4305 + ... + 5815.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

Almost surely, 2^7645660 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 7645660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9144576).

7645660 is an abundant number, since it is smaller than the sum of its proper divisors (10643492).

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

7645660 is a wasteful number, since it uses less digits than its factorization.

7645660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 7645660 is about 2765.0786607256. The cubic root of 7645660 is about 197.0024650331.

The spelling of 7645660 in words is "seven million, six hundred forty-five thousand, six hundred sixty".