665413472 has 24 divisors (see below), whose sum is σ = 1313766216. Its totient is φ = 331758592.

The previous prime is 665413453. The next prime is 665413517. The reversal of 665413472 is 274314566.

It is a happy number.

665413472 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18158 + ... + 40749.

It is an arithmetic number, because the mean of its divisors is an integer number (54740259).

Almost surely, 2^665413472 is an apocalyptic number.

It is an amenable number.

665413472 is a deficient number, since it is larger than the sum of its proper divisors (648352744).

665413472 is a wasteful number, since it uses less digits than its factorization.

665413472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59270 (or 59262 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 665413472 is about 25795.6095489136. The cubic root of 665413472 is about 873.0327381992.

The spelling of 665413472 in words is "six hundred sixty-five million, four hundred thirteen thousand, four hundred seventy-two".