641795 has 16 divisors (see below), whose sum is σ = 960768. Its totient is φ = 399840.

The previous prime is 641791. The next prime is 641803. The reversal of 641795 is 597146.

It is a happy number.

It is not a de Polignac number, because 641795 - 2² = 641791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449 + ... + 1218.

It is an arithmetic number, because the mean of its divisors is an integer number (60048).

2⁶⁴¹⁷⁹⁵ is an apocalyptic number.

641795 is a deficient number, since it is larger than the sum of its proper divisors (318973).

641795 is a wasteful number, since it uses less digits than its factorization.

641795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its digits is 7560, while the sum is 32.

The square root of 641795 is about 801.1210894740. The cubic root of 641795 is about 86.2578792774.

The spelling of 641795 in words is "six hundred forty-one thousand, seven hundred ninety-five".