1005005566 has 8 divisors (see below), whose sum is σ = 1517492304. Its totient is φ = 499174800.

The previous prime is 1005005549. The next prime is 1005005567. The reversal of 1005005566 is 6655005001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005005567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663615 + ... + 1664218.

It is an arithmetic number, because the mean of its divisors is an integer number (189686538).

Almost surely, 2^1005005566 is an apocalyptic number.

1005005566 is a deficient number, since it is larger than the sum of its proper divisors (512486738).

1005005566 is a wasteful number, since it uses less digits than its factorization.

1005005566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327986.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1005005566 is about 31701.8227551666. The cubic root of 1005005566 is about 1001.6657457504.

The spelling of 1005005566 in words is "one billion, five million, five thousand, five hundred sixty-six".