641206 has 8 divisors (see below), whose sum is σ = 1018440. Its totient is φ = 301728.

The previous prime is 641203. The next prime is 641213. The reversal of 641206 is 602146.

641206 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.

It is a super-2 number, since 2×641206² = 822290268872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641203) 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, 9396 + ... + 9463.

It is an arithmetic number, because the mean of its divisors is an integer number (127305).

2⁶⁴¹²⁰⁶ is an apocalyptic number.

641206 is a deficient number, since it is larger than the sum of its proper divisors (377234).

641206 is a wasteful number, since it uses less digits than its factorization.

641206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18878.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 641206 is about 800.7533952473. The cubic root of 641206 is about 86.2314838079.

Subtracting from 641206 its reverse (602146), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 641206 in words is "six hundred forty-one thousand, two hundred six".