641485 has 16 divisors (see below), whose sum is σ = 846720. Its totient is φ = 463680.

The previous prime is 641479. The next prime is 641491. The reversal of 641485 is 584146.

641485 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (641479) and next prime (641491).

It is not a de Polignac number, because 641485 - 2⁵ = 641453 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4546 + ... + 4684.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2⁶⁴¹⁴⁸⁵ is an apocalyptic number.

641485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

641485 is a deficient number, since it is larger than the sum of its proper divisors (205235).

641485 is a wasteful number, since it uses less digits than its factorization.

641485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its digits is 3840, while the sum is 28.

The square root of 641485 is about 800.9275872387. The cubic root of 641485 is about 86.2439889391.

The spelling of 641485 in words is "six hundred forty-one thousand, four hundred eighty-five".