8206660 has 72 divisors (see below), whose sum is σ = 21784896. Its totient is φ = 2522880.

The previous prime is 8206643. The next prime is 8206663. The reversal of 8206660 is 666028.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (8206663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112384 + ... + 112456.

It is an arithmetic number, because the mean of its divisors is an integer number (302568).

Almost surely, 2^8206660 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 8206660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10892448).

8206660 is an abundant number, since it is smaller than the sum of its proper divisors (13578236).

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

8206660 is a wasteful number, since it uses less digits than its factorization.

8206660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8206660 is about 2864.7268630709. The cubic root of 8206660 is about 201.7075466004.

The spelling of 8206660 in words is "eight million, two hundred six thousand, six hundred sixty".