556665005 has 16 divisors (see below), whose sum is σ = 744191280. Its totient is φ = 396899328.

The previous prime is 556664959. The next prime is 556665019. The reversal of 556665005 is 500566655.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 27573001 + 529092004 = 5251^2 + 23002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556665005 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 556665005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145772 + ... + 149541.

It is an arithmetic number, because the mean of its divisors is an integer number (46511955).

Almost surely, 2^556665005 is an apocalyptic number.

It is an amenable number.

556665005 is a deficient number, since it is larger than the sum of its proper divisors (187526275).

556665005 is a wasteful number, since it uses less digits than its factorization.

556665005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295360.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 556665005 is about 23593.7492781457. The cubic root of 556665005 is about 822.6175550975.

The spelling of 556665005 in words is "five hundred fifty-six million, six hundred sixty-five thousand, five".