556565665 has 8 divisors (see below), whose sum is σ = 676333440. Its totient is φ = 439616112.

The previous prime is 556565657. The next prime is 556565671. The reversal of 556565665 is 566565655.

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

It is a cyclic number.

It is not a de Polignac number, because 556565665 - 2³ = 556565657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704119 + ... + 704908.

It is an arithmetic number, because the mean of its divisors is an integer number (84541680).

Almost surely, 2^556565665 is an apocalyptic number.

It is an amenable number.

556565665 is a deficient number, since it is larger than the sum of its proper divisors (119767775).

556565665 is a wasteful number, since it uses less digits than its factorization.

556565665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409111.

The product of its digits is 4050000, while the sum is 49.

The square root of 556565665 is about 23591.6439656078. The cubic root of 556565665 is about 822.5686186104.

The spelling of 556565665 in words is "five hundred fifty-six million, five hundred sixty-five thousand, six hundred sixty-five".