646003230 has 128 divisors (see below), whose sum is σ = 1742860800. Its totient is φ = 152285184.

The previous prime is 646003201. The next prime is 646003271. The reversal of 646003230 is 32300646.

It is a self number, because there is not a number n which added to its sum of digits gives 646003230.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1579266 + ... + 1579674.

It is an arithmetic number, because the mean of its divisors is an integer number (13616100).

Almost surely, 2^646003230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646003230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871430400).

646003230 is an abundant number, since it is smaller than the sum of its proper divisors (1096857570).

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

646003230 is a wasteful number, since it uses less digits than its factorization.

646003230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 646003230 is about 25416.5935955234. The cubic root of 646003230 is about 864.4599879366.

Adding to 646003230 its reverse (32300646), we get a palindrome (678303876).

The spelling of 646003230 in words is "six hundred forty-six million, three thousand, two hundred thirty".