665713230 has 64 divisors (see below), whose sum is σ = 1966422528. Its totient is φ = 140457600.

The previous prime is 665713211. The next prime is 665713261. The reversal of 665713230 is 32317566.

It is a junction number, because it is equal to n+sod(n) for n = 665713191 and 665713200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119196 + ... + 124655.

It is an arithmetic number, because the mean of its divisors is an integer number (30725352).

Almost surely, 2^665713230 is an apocalyptic number.

665713230 is an abundant number, since it is smaller than the sum of its proper divisors (1300709298).

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

665713230 is a wasteful number, since it uses less digits than its factorization.

665713230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243881.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 665713230 is about 25801.4191470159. The cubic root of 665713230 is about 873.1638142250.

The spelling of 665713230 in words is "six hundred sixty-five million, seven hundred thirteen thousand, two hundred thirty".