667555606 has 8 divisors (see below), whose sum is σ = 1001543400. Its totient is φ = 333707808.

The previous prime is 667555597. The next prime is 667555627. The reversal of 667555606 is 606555766.

667555606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent 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, 22131 + ... + 42718.

It is an arithmetic number, because the mean of its divisors is an integer number (125192925).

Almost surely, 2^667555606 is an apocalyptic number.

667555606 is a deficient number, since it is larger than the sum of its proper divisors (333987794).

667555606 is a wasteful number, since it uses less digits than its factorization.

667555606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69998.

The product of its (nonzero) digits is 1134000, while the sum is 46.

The square root of 667555606 is about 25837.0974763033. The cubic root of 667555606 is about 873.9685723033.

It can be divided in two parts, 66755 and 5606, that added together give a square (72361 = 269²).

The spelling of 667555606 in words is "six hundred sixty-seven million, five hundred fifty-five thousand, six hundred six".