665793442 has 16 divisors (see below), whose sum is σ = 1012302720. Its totient is φ = 328384512.

The previous prime is 665793439. The next prime is 665793481. The reversal of 665793442 is 244397566.

It is a junction number, because it is equal to n+sod(n) for n = 665793392 and 665793401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48034 + ... + 60322.

It is an arithmetic number, because the mean of its divisors is an integer number (63268920).

Almost surely, 2^665793442 is an apocalyptic number.

665793442 is a deficient number, since it is larger than the sum of its proper divisors (346509278).

665793442 is a wasteful number, since it uses less digits than its factorization.

665793442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12657.

The product of its digits is 1088640, while the sum is 46.

The square root of 665793442 is about 25802.9735108185. The cubic root of 665793442 is about 873.1988820790.

The spelling of 665793442 in words is "six hundred sixty-five million, seven hundred ninety-three thousand, four hundred forty-two".