502068649 has 2 divisors, whose sum is σ = 502068650. Its totient is φ = 502068648.

The previous prime is 502068643. The next prime is 502068661. The reversal of 502068649 is 946860205.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438148624 + 63920025 = 20932^2 + 7995^2 .

It is a cyclic number.

It is not a de Polignac number, because 502068649 - 2³ = 502068641 is a prime.

It is not a weakly prime, because it can be changed into another prime (502068641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251034324 + 251034325.

It is an arithmetic number, because the mean of its divisors is an integer number (251034325).

Almost surely, 2^502068649 is an apocalyptic number.

It is an amenable number.

502068649 is a deficient number, since it is larger than the sum of its proper divisors (1).

502068649 is an equidigital number, since it uses as much as digits as its factorization.

502068649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 502068649 is about 22406.8884274457. Note that the first 3 decimals coincide. The cubic root of 502068649 is about 794.7936117596.

The spelling of 502068649 in words is "five hundred two million, sixty-eight thousand, six hundred forty-nine".