641048 has 16 divisors (see below), whose sum is σ = 1210680. Its totient is φ = 318208.

The previous prime is 640993. The next prime is 641051. The reversal of 641048 is 840146.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640 + ... + 1992.

2⁶⁴¹⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

641048 is a deficient number, since it is larger than the sum of its proper divisors (569632).

641048 is a wasteful number, since it uses less digits than its factorization.

641048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 641048 is about 800.6547320787. The cubic root of 641048 is about 86.2244004402.

The spelling of 641048 in words is "six hundred forty-one thousand, forty-eight".