496721 has 4 divisors (see below), whose sum is σ = 505200. Its totient is φ = 488244.

The previous prime is 496711. The next prime is 496733. The reversal of 496721 is 127694.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-496721 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (496711) 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, 4151 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (126300).

2⁴⁹⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

496721 is a deficient number, since it is larger than the sum of its proper divisors (8479).

496721 is an equidigital number, since it uses as much as digits as its factorization.

496721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478.

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

The square root of 496721 is about 704.7843641852. The cubic root of 496721 is about 79.1961689981.

It can be divided in two parts, 4 and 96721, that multiplied together give a square (386884 = 622²).

The spelling of 496721 in words is "four hundred ninety-six thousand, seven hundred twenty-one".