641896 has 32 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 293760.

The previous prime is 641891. The next prime is 641897. The reversal of 641896 is 698146.

641896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641891) by changing a digit.

641896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6181 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2⁶⁴¹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

641896 is an abundant number, since it is smaller than the sum of its proper divisors (668504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641896 is a wasteful number, since it uses less digits than its factorization.

641896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 165 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 641896 is about 801.1841236570. The cubic root of 641896 is about 86.2624038732.

The spelling of 641896 in words is "six hundred forty-one thousand, eight hundred ninety-six".