665648020592 has 20 divisors (see below), whose sum is σ = 1289737034136. Its totient is φ = 332812656960.

The previous prime is 665648020577. The next prime is 665648020603. The reversal of 665648020592 is 295020846566.

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, 215459 + ... + 1173762.

Almost surely, 2^665648020592 is an apocalyptic number.

It is an amenable number.

665648020592 is a deficient number, since it is larger than the sum of its proper divisors (624089013544).

665648020592 is a wasteful number, since it uses less digits than its factorization.

665648020592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419176 (or 1419170 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 665648020592 in words is "six hundred sixty-five billion, six hundred forty-eight million, twenty thousand, five hundred ninety-two".