655566115 has 4 divisors (see below), whose sum is σ = 786679344. Its totient is φ = 524452888.

The previous prime is 655566091. The next prime is 655566127. The reversal of 655566115 is 511665556.

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

It is a cyclic number.

It is not a de Polignac number, because 655566115 - 2¹¹ = 655564067 is a prime.

It is a super-2 number, since 2×655566115² = 859533862272386450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65556607 + ... + 65556616.

It is an arithmetic number, because the mean of its divisors is an integer number (196669836).

Almost surely, 2^655566115 is an apocalyptic number.

655566115 is a deficient number, since it is larger than the sum of its proper divisors (131113229).

655566115 is a wasteful number, since it uses less digits than its factorization.

655566115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131113228.

The product of its digits is 135000, while the sum is 40.

The square root of 655566115 is about 25604.0253671176. The cubic root of 655566115 is about 868.7046893194.

The spelling of 655566115 in words is "six hundred fifty-five million, five hundred sixty-six thousand, one hundred fifteen".