498971687 has 2 divisors, whose sum is σ = 498971688. Its totient is φ = 498971686.

The previous prime is 498971659. The next prime is 498971723. The reversal of 498971687 is 786179894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 498971687 - 2¹⁶ = 498906151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498971657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249485843 + 249485844.

It is an arithmetic number, because the mean of its divisors is an integer number (249485844).

Almost surely, 2^498971687 is an apocalyptic number.

498971687 is a deficient number, since it is larger than the sum of its proper divisors (1).

498971687 is an equidigital number, since it uses as much as digits as its factorization.

498971687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 59.

The square root of 498971687 is about 22337.6741627234. The cubic root of 498971687 is about 793.1560374976.

The spelling of 498971687 in words is "four hundred ninety-eight million, nine hundred seventy-one thousand, six hundred eighty-seven".