1000566655 has 8 divisors (see below), whose sum is σ = 1309832784. Its totient is φ = 727684800.

The previous prime is 1000566641. The next prime is 1000566659. The reversal of 1000566655 is 5566650001.

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

It is not a de Polignac number, because 1000566655 - 2²⁵ = 967012223 is a prime.

It is a super-2 number, since 2×1000566655² = 2002267262195778050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000566655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000566659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9096006 + ... + 9096115.

It is an arithmetic number, because the mean of its divisors is an integer number (163729098).

Almost surely, 2^1000566655 is an apocalyptic number.

1000566655 is a deficient number, since it is larger than the sum of its proper divisors (309266129).

1000566655 is a wasteful number, since it uses less digits than its factorization.

1000566655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192137.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1000566655 is about 31631.7349350300. The cubic root of 1000566655 is about 1000.1888493337.

The spelling of 1000566655 in words is "one billion, five hundred sixty-six thousand, six hundred fifty-five".