665920092 has 24 divisors (see below), whose sum is σ = 1560605200. Its totient is φ = 221003136.

The previous prime is 665920019. The next prime is 665920093. The reversal of 665920092 is 290029566.

It is a self number, because there is not a number n which added to its sum of digits gives 665920092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665920093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118417 + ... + 123912.

Almost surely, 2^665920092 is an apocalyptic number.

It is an amenable number.

665920092 is an abundant number, since it is smaller than the sum of its proper divisors (894685108).

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

665920092 is a wasteful number, since it uses less digits than its factorization.

665920092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242565 (or 242563 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 665920092 is about 25805.4275686337. The cubic root of 665920092 is about 873.2542464107.

The spelling of 665920092 in words is "six hundred sixty-five million, nine hundred twenty thousand, ninety-two".