8416660 has 48 divisors (see below), whose sum is σ = 20482560. Its totient is φ = 2845440.

The previous prime is 8416657. The next prime is 8416663. The reversal of 8416660 is 666148.

8416660 = T₄₀₅ + T₄₀₆ + ... + T₄₈₈.

It is an interprime number because it is at equal distance from previous prime (8416657) and next prime (8416663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8416663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10680 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (426720).

Almost surely, 2^8416660 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 8416660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10241280).

8416660 is an abundant number, since it is smaller than the sum of its proper divisors (12065900).

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

8416660 is a wasteful number, since it uses less digits than its factorization.

8416660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 8416660 is about 2901.1480486180. The cubic root of 8416660 is about 203.4135727988.

The spelling of 8416660 in words is "eight million, four hundred sixteen thousand, six hundred sixty".