1006505995 has 16 divisors (see below), whose sum is σ = 1395115488. Its totient is φ = 688944640.

The previous prime is 1006505993. The next prime is 1006506023. The reversal of 1006505995 is 5995056001.

It is not a de Polignac number, because 1006505995 - 2¹ = 1006505993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006505993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537304 + ... + 539173.

It is an arithmetic number, because the mean of its divisors is an integer number (87194718).

Almost surely, 2^1006505995 is an apocalyptic number.

1006505995 is a deficient number, since it is larger than the sum of its proper divisors (388609493).

1006505995 is a wasteful number, since it uses less digits than its factorization.

1006505995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076510.

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 1006505995 is about 31725.4786409914. The cubic root of 1006505995 is about 1002.1639788178.

The spelling of 1006505995 in words is "one billion, six million, five hundred five thousand, nine hundred ninety-five".