491206 has 8 divisors (see below), whose sum is σ = 739800. Its totient is φ = 244608.

The previous prime is 491201. The next prime is 491213. The reversal of 491206 is 602194.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (92475).

2⁴⁹¹²⁰⁶ is an apocalyptic number.

491206 is a deficient number, since it is larger than the sum of its proper divisors (248594).

491206 is a wasteful number, since it uses less digits than its factorization.

491206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 491206 is about 700.8608991804. The cubic root of 491206 is about 78.9019774473.

The spelling of 491206 in words is "four hundred ninety-one thousand, two hundred six".