1020668507 has 2 divisors, whose sum is σ = 1020668508. Its totient is φ = 1020668506.

The previous prime is 1020668503. The next prime is 1020668527. The reversal of 1020668507 is 7058660201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020668507 - 2² = 1020668503 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020668501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510334253 + 510334254.

It is an arithmetic number, because the mean of its divisors is an integer number (510334254).

Almost surely, 2^1020668507 is an apocalyptic number.

1020668507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020668507 is an equidigital number, since it uses as much as digits as its factorization.

1020668507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1020668507 is about 31947.9030141260. The cubic root of 1020668507 is about 1006.8425747130.

The spelling of 1020668507 in words is "one billion, twenty million, six hundred sixty-eight thousand, five hundred seven".