641954 has 16 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 297024.

The previous prime is 641929. The next prime is 641959. The reversal of 641954 is 459146.

641954 = T₁₀₂ + T₁₀₃ + ... + T₁₆₉.

641954 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 (641959) by changing a digit.

641954 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, 2567 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁶⁴¹⁹⁵⁴ is an apocalyptic number.

641954 is a deficient number, since it is larger than the sum of its proper divisors (394846).

641954 is a wasteful number, since it uses less digits than its factorization.

641954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337.

The product of its digits is 4320, while the sum is 29.

The square root of 641954 is about 801.2203192631. The cubic root of 641954 is about 86.2650019413.

The spelling of 641954 in words is "six hundred forty-one thousand, nine hundred fifty-four".