1020650287 has 2 divisors, whose sum is σ = 1020650288. Its totient is φ = 1020650286.

The previous prime is 1020650207. The next prime is 1020650297. The reversal of 1020650287 is 7820560201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020650287 - 2¹⁹ = 1020125999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020650207) 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, 510325143 + 510325144.

It is an arithmetic number, because the mean of its divisors is an integer number (510325144).

Almost surely, 2^1020650287 is an apocalyptic number.

1020650287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020650287 is an equidigital number, since it uses as much as digits as its factorization.

1020650287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1020650287 is about 31947.6178611176. The cubic root of 1020650287 is about 1006.8365836131.

The spelling of 1020650287 in words is "one billion, twenty million, six hundred fifty thousand, two hundred eighty-seven".