498687823 has 2 divisors, whose sum is σ = 498687824. Its totient is φ = 498687822.

The previous prime is 498687779. The next prime is 498687841. The reversal of 498687823 is 328786894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 498687823 - 2¹³ = 498679631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498687023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249343911 + 249343912.

It is an arithmetic number, because the mean of its divisors is an integer number (249343912).

Almost surely, 2^498687823 is an apocalyptic number.

498687823 is a deficient number, since it is larger than the sum of its proper divisors (1).

498687823 is an equidigital number, since it uses as much as digits as its factorization.

498687823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 55.

The square root of 498687823 is about 22331.3193295873. The cubic root of 498687823 is about 793.0056006690.

The spelling of 498687823 in words is "four hundred ninety-eight million, six hundred eighty-seven thousand, eight hundred twenty-three".