491726 has 4 divisors (see below), whose sum is σ = 737592. Its totient is φ = 245862.

The previous prime is 491719. The next prime is 491731. The reversal of 491726 is 627194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627194 = 2 ⋅313597.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122930 + ... + 122933.

It is an arithmetic number, because the mean of its divisors is an integer number (184398).

2⁴⁹¹⁷²⁶ is an apocalyptic number.

491726 is a deficient number, since it is larger than the sum of its proper divisors (245866).

491726 is a wasteful number, since it uses less digits than its factorization.

491726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245865.

The product of its digits is 3024, while the sum is 29.

The square root of 491726 is about 701.2317733817. The cubic root of 491726 is about 78.9298100055.

The spelling of 491726 in words is "four hundred ninety-one thousand, seven hundred twenty-six".