499571647 has 2 divisors, whose sum is σ = 499571648. Its totient is φ = 499571646.

The previous prime is 499571641. The next prime is 499571659. The reversal of 499571647 is 746175994.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499571647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 499571594 and 499571603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499571641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249785823 + 249785824.

It is an arithmetic number, because the mean of its divisors is an integer number (249785824).

Almost surely, 2^499571647 is an apocalyptic number.

499571647 is a deficient number, since it is larger than the sum of its proper divisors (1).

499571647 is an equidigital number, since it uses as much as digits as its factorization.

499571647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The square root of 499571647 is about 22351.0994584159. The cubic root of 499571647 is about 793.4738052265.

The spelling of 499571647 in words is "four hundred ninety-nine million, five hundred seventy-one thousand, six hundred forty-seven".