665348992 has 288 divisors, whose sum is σ = 1860712560. Its totient is φ = 231137280.

The previous prime is 665348989. The next prime is 665349007. The reversal of 665348992 is 299843566.

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 35 ways as a sum of consecutive naturals, for example, 35018359 + ... + 35018377.

Almost surely, 2^665348992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665348992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930356280).

665348992 is an abundant number, since it is smaller than the sum of its proper divisors (1195363568).

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

665348992 is a wasteful number, since it uses less digits than its factorization.

665348992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 56 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The square root of 665348992 is about 25794.3596935454. The cubic root of 665348992 is about 873.0045377034.

The spelling of 665348992 in words is "six hundred sixty-five million, three hundred forty-eight thousand, nine hundred ninety-two".