498691 has 2 divisors, whose sum is σ = 498692. Its totient is φ = 498690.

The previous prime is 498689. The next prime is 498733. The reversal of 498691 is 196894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 498691 - 2¹ = 498689 is a prime.

Together with 498689, it forms a pair of twin primes.

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 498691.

It is not a weakly prime, because it can be changed into another prime (498611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249345 + 249346.

It is an arithmetic number, because the mean of its divisors is an integer number (249346).

2⁴⁹⁸⁶⁹¹ is an apocalyptic number.

498691 is a deficient number, since it is larger than the sum of its proper divisors (1).

498691 is an equidigital number, since it uses as much as digits as its factorization.

498691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 37.

The square root of 498691 is about 706.1805718087. The cubic root of 498691 is about 79.3007284671.

The spelling of 498691 in words is "four hundred ninety-eight thousand, six hundred ninety-one".