1000011660 has 48 divisors (see below), whose sum is σ = 2803621632. Its totient is φ = 266328000.

The previous prime is 1000011659. The next prime is 1000011673. The reversal of 1000011660 is 661100001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 38385 + ... + 58935.

It is an arithmetic number, because the mean of its divisors is an integer number (58408784).

Almost surely, 2^1000011660 is an apocalyptic number.

1000011660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000011660 is an abundant number, since it is smaller than the sum of its proper divisors (1803609972).

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

1000011660 is a wasteful number, since it uses less digits than its factorization.

1000011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21374 (or 21372 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1000011660 is about 31622.9609619340. The cubic root of 1000011660 is about 1000.0038866516.

Adding to 1000011660 its reverse (661100001), we get a palindrome (1661111661).

The spelling of 1000011660 in words is "one billion, eleven thousand, six hundred sixty".