641488 has 10 divisors (see below), whose sum is σ = 1242914. Its totient is φ = 320736.

The previous prime is 641479. The next prime is 641491. The reversal of 641488 is 884146.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 242064 = 632^2 + 492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20031 + ... + 20062.

2⁶⁴¹⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

641488 is a deficient number, since it is larger than the sum of its proper divisors (601426).

641488 is a wasteful number, since it uses less digits than its factorization.

641488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40101 (or 40095 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 641488 is about 800.9294600650. The cubic root of 641488 is about 86.2441233831.

The spelling of 641488 in words is "six hundred forty-one thousand, four hundred eighty-eight".