1006105987 has 2 divisors, whose sum is σ = 1006105988. Its totient is φ = 1006105986.

The previous prime is 1006105979. The next prime is 1006106021. The reversal of 1006105987 is 7895016001.

It is a weak prime.

It is an emirp because it is prime and its reverse (7895016001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1006105987 - 2³ = 1006105979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1006205987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503052993 + 503052994.

It is an arithmetic number, because the mean of its divisors is an integer number (503052994).

Almost surely, 2^1006105987 is an apocalyptic number.

1006105987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006105987 is an equidigital number, since it uses as much as digits as its factorization.

1006105987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1006105987 is about 31719.1738070209. The cubic root of 1006105987 is about 1002.0312004314.

The spelling of 1006105987 in words is "one billion, six million, one hundred five thousand, nine hundred eighty-seven".