556688065 has 4 divisors (see below), whose sum is σ = 668025684. Its totient is φ = 445350448.

The previous prime is 556688053. The next prime is 556688161. The reversal of 556688065 is 560886655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 345625281 + 211062784 = 18591^2 + 14528^2 .

It is a cyclic number.

It is not a de Polignac number, because 556688065 - 2¹³ = 556679873 is a prime.

It is a super-4 number, since 4×556688065⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian 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, 55668802 + ... + 55668811.

It is an arithmetic number, because the mean of its divisors is an integer number (167006421).

Almost surely, 2^556688065 is an apocalyptic number.

It is an amenable number.

556688065 is a deficient number, since it is larger than the sum of its proper divisors (111337619).

556688065 is a wasteful number, since it uses less digits than its factorization.

556688065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111337618.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The square root of 556688065 is about 23594.2379618414. The cubic root of 556688065 is about 822.6289139930.

The spelling of 556688065 in words is "five hundred fifty-six million, six hundred eighty-eight thousand, sixty-five".