655555606 has 4 divisors (see below), whose sum is σ = 983333412. Its totient is φ = 327777802.

The previous prime is 655555583. The next prime is 655555609. The reversal of 655555606 is 606555556.

655555606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655555609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163888900 + ... + 163888903.

It is an arithmetic number, because the mean of its divisors is an integer number (245833353).

Almost surely, 2^655555606 is an apocalyptic number.

655555606 is a deficient number, since it is larger than the sum of its proper divisors (327777806).

655555606 is a wasteful number, since it uses less digits than its factorization.

655555606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327777805.

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 655555606 is about 25603.8201446581. The cubic root of 655555606 is about 868.7000473944.

Subtracting from 655555606 its reverse (606555556), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 655555606 in words is "six hundred fifty-five million, five hundred fifty-five thousand, six hundred six".