665013030 has 128 divisors (see below), whose sum is σ = 1862009856. Its totient is φ = 150374400.

The previous prime is 665012969. The next prime is 665013031. The reversal of 665013030 is 30310566.

665013030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665013031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 310122 + ... + 312258.

It is an arithmetic number, because the mean of its divisors is an integer number (14546952).

Almost surely, 2^665013030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665013030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931004928).

665013030 is an abundant number, since it is smaller than the sum of its proper divisors (1196996826).

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

665013030 is a wasteful number, since it uses less digits than its factorization.

665013030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 665013030 is about 25787.8465560814. The cubic root of 665013030 is about 872.8575743635.

Adding to 665013030 its reverse (30310566), we get a palindrome (695323596).

The spelling of 665013030 in words is "six hundred sixty-five million, thirteen thousand, thirty".