498688457 has 2 divisors, whose sum is σ = 498688458. Its totient is φ = 498688456.

The previous prime is 498688447. The next prime is 498688469. The reversal of 498688457 is 754886894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390299536 + 108388921 = 19756^2 + 10411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-498688457 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 498688396 and 498688405.

It is not a weakly prime, because it can be changed into another prime (498688417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249344228 + 249344229.

It is an arithmetic number, because the mean of its divisors is an integer number (249344229).

Almost surely, 2^498688457 is an apocalyptic number.

It is an amenable number.

498688457 is a deficient number, since it is larger than the sum of its proper divisors (1).

498688457 is an equidigital number, since it uses as much as digits as its factorization.

498688457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The square root of 498688457 is about 22331.3335248928. Note that the first 3 decimals coincide. The cubic root of 498688457 is about 793.0059367279.

The spelling of 498688457 in words is "four hundred ninety-eight million, six hundred eighty-eight thousand, four hundred fifty-seven".