665603492 has 6 divisors (see below), whose sum is σ = 1164806118. Its totient is φ = 332801744.

The previous prime is 665603489. The next prime is 665603531. The reversal of 665603492 is 294306566.

665603492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 346480996 + 319122496 = 18614^2 + 17864^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83200433 + ... + 83200440.

It is an arithmetic number, because the mean of its divisors is an integer number (194134353).

Almost surely, 2^665603492 is an apocalyptic number.

It is an amenable number.

665603492 is a deficient number, since it is larger than the sum of its proper divisors (499202626).

665603492 is a wasteful number, since it uses less digits than its factorization.

665603492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166400877 (or 166400875 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 665603492 is about 25799.2924709187. The cubic root of 665603492 is about 873.1158333468.

The spelling of 665603492 in words is "six hundred sixty-five million, six hundred three thousand, four hundred ninety-two".