556009965 has 48 divisors (see below), whose sum is σ = 1112187648. Its totient is φ = 251693568.

The previous prime is 556009963. The next prime is 556009969. The reversal of 556009965 is 569900655.

556009965 is a `hidden beast` number, since 556 + 0 + 0 + 9 + 96 + 5 = 666.

It is not a de Polignac number, because 556009965 - 2¹ = 556009963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 556009965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556009963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23877 + ... + 41013.

It is an arithmetic number, because the mean of its divisors is an integer number (23170576).

Almost surely, 2^556009965 is an apocalyptic number.

It is an amenable number.

556009965 is an abundant number, since it is smaller than the sum of its proper divisors (556177683).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556009965 is a wasteful number, since it uses less digits than its factorization.

556009965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17258 (or 17255 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The square root of 556009965 is about 23579.8635492235. The cubic root of 556009965 is about 822.2947643738.

It can be divided in two parts, 5560099 and 65, that added together give a square (5560164 = 2358²).

The spelling of 556009965 in words is "five hundred fifty-six million, nine thousand, nine hundred sixty-five".