665048 has 16 divisors (see below), whose sum is σ = 1269000. Its totient is φ = 326656.

The previous prime is 665047. The next prime is 665051. The reversal of 665048 is 840566.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 665048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233 + ... + 1176.

2⁶⁶⁵⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

665048 is a deficient number, since it is larger than the sum of its proper divisors (603952).

665048 is a wasteful number, since it uses less digits than its factorization.

665048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 665048 is about 815.5047516722. The cubic root of 665048 is about 87.2872873961.

The spelling of 665048 in words is "six hundred sixty-five thousand, forty-eight".