606555665 has 8 divisors (see below), whose sum is σ = 770682600. Its totient is φ = 456700672.

The previous prime is 606555661. The next prime is 606555673. The reversal of 606555665 is 566555606.

It can be written as a sum of positive squares in 4 ways, for example, as 194993296 + 411562369 = 13964^2 + 20287^2 .

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 606555665 - 2² = 606555661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (606555661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3567890 + ... + 3568059.

It is an arithmetic number, because the mean of its divisors is an integer number (96335325).

Almost surely, 2^606555665 is an apocalyptic number.

It is an amenable number.

606555665 is a deficient number, since it is larger than the sum of its proper divisors (164126935).

606555665 is a wasteful number, since it uses less digits than its factorization.

606555665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135971.

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 606555665 is about 24628.3508380078. The cubic root of 606555665 is about 846.4933572940.

The spelling of 606555665 in words is "six hundred six million, five hundred fifty-five thousand, six hundred sixty-five".