499806653 has 2 divisors, whose sum is σ = 499806654. Its totient is φ = 499806652.

The previous prime is 499806631. The next prime is 499806679. The reversal of 499806653 is 356608994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496264729 + 3541924 = 22277^2 + 1882^2 .

It is a cyclic number.

It is not a de Polignac number, because 499806653 - 2¹² = 499802557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499806623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249903326 + 249903327.

It is an arithmetic number, because the mean of its divisors is an integer number (249903327).

Almost surely, 2^499806653 is an apocalyptic number.

It is an amenable number.

499806653 is a deficient number, since it is larger than the sum of its proper divisors (1).

499806653 is an equidigital number, since it uses as much as digits as its factorization.

499806653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 499806653 is about 22356.3559866093. The cubic root of 499806653 is about 793.5982063838.

The spelling of 499806653 in words is "four hundred ninety-nine million, eight hundred six thousand, six hundred fifty-three".