491763 has 8 divisors (see below), whose sum is σ = 684288. Its totient is φ = 313544.

The previous prime is 491747. The next prime is 491773. The reversal of 491763 is 367194.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 491763 - 2⁴ = 491747 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 491763.

It is not an unprimeable number, because it can be changed into a prime (491773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3495 + ... + 3632.

It is an arithmetic number, because the mean of its divisors is an integer number (85536).

2⁴⁹¹⁷⁶³ is an apocalyptic number.

491763 is a deficient number, since it is larger than the sum of its proper divisors (192525).

491763 is a wasteful number, since it uses less digits than its factorization.

491763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153.

The product of its digits is 4536, while the sum is 30.

The square root of 491763 is about 701.2581550328. The cubic root of 491763 is about 78.9317896512.

The spelling of 491763 in words is "four hundred ninety-one thousand, seven hundred sixty-three".