556064639 has 8 divisors (see below), whose sum is σ = 618156672. Its totient is φ = 496732320.

The previous prime is 556064627. The next prime is 556064653. The reversal of 556064639 is 936460655.

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 556064639 - 2⁴ = 556064623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556064639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556064609) 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, 689504 + ... + 690309.

It is an arithmetic number, because the mean of its divisors is an integer number (77269584).

Almost surely, 2^556064639 is an apocalyptic number.

556064639 is a deficient number, since it is larger than the sum of its proper divisors (62092033).

556064639 is a wasteful number, since it uses less digits than its factorization.

556064639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379857.

The product of its (nonzero) digits is 583200, while the sum is 44.

The square root of 556064639 is about 23581.0228573741. The cubic root of 556064639 is about 822.3217163310.

The spelling of 556064639 in words is "five hundred fifty-six million, sixty-four thousand, six hundred thirty-nine".