1000791666 has 64 divisors (see below), whose sum is σ = 2691221760. Its totient is φ = 269118720.

The previous prime is 1000791643. The next prime is 1000791697. The reversal of 1000791666 is 6661970001.

It is a self number, because there is not a number n which added to its sum of digits gives 1000791666.

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 31 ways as a sum of consecutive naturals, for example, 71445 + ... + 84296.

It is an arithmetic number, because the mean of its divisors is an integer number (42050340).

Almost surely, 2^1000791666 is an apocalyptic number.

1000791666 is an abundant number, since it is smaller than the sum of its proper divisors (1690430094).

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

1000791666 is a wasteful number, since it uses less digits than its factorization.

1000791666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155776 (or 155770 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1000791666 is about 31635.2914638067. The cubic root of 1000791666 is about 1000.2638190600.

The spelling of 1000791666 in words is "one billion, seven hundred ninety-one thousand, six hundred sixty-six".