4320660 has 48 divisors (see below), whose sum is σ = 12229056. Its totient is φ = 1139712.

The previous prime is 4320643. The next prime is 4320689. The reversal of 4320660 is 660234.

4320660 = T₂₂₉ + T₂₃₀ + ... + T₃₃₅.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6084 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (254772).

Almost surely, 2^4320660 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 4320660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6114528).

4320660 is an abundant number, since it is smaller than the sum of its proper divisors (7908396).

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

4320660 is a wasteful number, since it uses less digits than its factorization.

4320660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 4320660 is about 2078.6197343430. The cubic root of 4320660 is about 162.8733506272.

Adding to 4320660 its reverse (660234), we get a palindrome (4980894).

The spelling of 4320660 in words is "four million, three hundred twenty thousand, six hundred sixty".