1000564566 has 8 divisors (see below), whose sum is σ = 2001129144. Its totient is φ = 333521520.

The previous prime is 1000564559. The next prime is 1000564573. The reversal of 1000564566 is 6654650001.

It is an interprime number because it is at equal distance from previous prime (1000564559) and next prime (1000564573).

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

1000564566 is an admirable number.

It is a super-2 number, since 2×1000564566² = 2002258901469536712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83380375 + ... + 83380386.

It is an arithmetic number, because the mean of its divisors is an integer number (250141143).

Almost surely, 2^1000564566 is an apocalyptic number.

1000564566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1000564566 is a wasteful number, since it uses less digits than its factorization.

1000564566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166760766.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1000564566 is about 31631.7019143770. The cubic root of 1000564566 is about 1000.1881532628.

The spelling of 1000564566 in words is "one billion, five hundred sixty-four thousand, five hundred sixty-six".