641498 has 16 divisors (see below), whose sum is σ = 1130976. Its totient is φ = 269040.

The previous prime is 641491. The next prime is 641513. The reversal of 641498 is 894146.

It is not an unprimeable number, because it can be changed into a prime (641491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836 + ... + 1407.

It is an arithmetic number, because the mean of its divisors is an integer number (70686).

2⁶⁴¹⁴⁹⁸ is an apocalyptic number.

641498 is a deficient number, since it is larger than the sum of its proper divisors (489478).

641498 is a wasteful number, since it uses less digits than its factorization.

641498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269.

The product of its digits is 6912, while the sum is 32.

The square root of 641498 is about 800.9357027877. The cubic root of 641498 is about 86.2445715270.

The spelling of 641498 in words is "six hundred forty-one thousand, four hundred ninety-eight".