4320666 has 48 divisors (see below), whose sum is σ = 10917504. Its totient is φ = 1209312.

The previous prime is 4320643. The next prime is 4320689. The reversal of 4320666 is 6660234.

It is an interprime number because it is at equal distance from previous prime (4320643) and next prime (4320689).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6355 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (227448).

Almost surely, 2^4320666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4320666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5458752).

4320666 is an abundant number, since it is smaller than the sum of its proper divisors (6596838).

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

4320666 is a wasteful number, since it uses less digits than its factorization.

4320666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 4320666 is about 2078.6211776079. The cubic root of 4320666 is about 162.8734260200.

The spelling of 4320666 in words is "four million, three hundred twenty thousand, six hundred sixty-six".