641874 has 8 divisors (see below), whose sum is σ = 1283760. Its totient is φ = 213956.

The previous prime is 641873. The next prime is 641881. The reversal of 641874 is 478146.

641874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

641874 is an admirable number.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 641874.

It is not an unprimeable number, because it can be changed into a prime (641873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53484 + ... + 53495.

It is an arithmetic number, because the mean of its divisors is an integer number (160470).

2⁶⁴¹⁸⁷⁴ is an apocalyptic number.

641874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641874 is a wasteful number, since it uses less digits than its factorization.

641874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106984.

The product of its digits is 5376, while the sum is 30.

The square root of 641874 is about 801.1703938614. The cubic root of 641874 is about 86.2614183581.

The spelling of 641874 in words is "six hundred forty-one thousand, eight hundred seventy-four".