1006636660 has 48 divisors (see below), whose sum is σ = 2132153856. Its totient is φ = 399203712.

The previous prime is 1006636637. The next prime is 1006636679. The reversal of 1006636660 is 666366001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1658077 + ... + 1658683.

It is an arithmetic number, because the mean of its divisors is an integer number (44419872).

Almost surely, 2^1006636660 is an apocalyptic number.

1006636660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1006636660 is an abundant number, since it is smaller than the sum of its proper divisors (1125517196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1006636660 is a wasteful number, since it uses less digits than its factorization.

1006636660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 1006636660 is about 31727.5378811530. The cubic root of 1006636660 is about 1002.2073440473.

The spelling of 1006636660 in words is "one billion, six million, six hundred thirty-six thousand, six hundred sixty".