665752260 has 48 divisors (see below), whose sum is σ = 1909579392. Its totient is φ = 173203200.

The previous prime is 665752259. The next prime is 665752261. The reversal of 665752260 is 62257566.

665752260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (665752259) and next prime (665752261).

It is not an unprimeable number, because it can be changed into a prime (665752261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132856 + ... + 137775.

It is an arithmetic number, because the mean of its divisors is an integer number (39782904).

Almost surely, 2^665752260 is an apocalyptic number.

665752260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665752260 is an abundant number, since it is smaller than the sum of its proper divisors (1243827132).

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

665752260 is a wasteful number, since it uses less digits than its factorization.

665752260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270684 (or 270682 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 665752260 is about 25802.1754896753. The cubic root of 665752260 is about 873.1808780878.

The spelling of 665752260 in words is "six hundred sixty-five million, seven hundred fifty-two thousand, two hundred sixty".