5555644660 has 12 divisors (see below), whose sum is σ = 11666853828. Its totient is φ = 2222257856.

The previous prime is 5555644657. The next prime is 5555644663. The reversal of 5555644660 is 664465555.

It is an interprime number because it is at equal distance from previous prime (5555644657) and next prime (5555644663).

It can be written as a sum of positive squares in 2 ways, for example, as 1190664036 + 4364980624 = 34506^2 + 66068^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5555644660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555644663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138891097 + ... + 138891136.

It is an arithmetic number, because the mean of its divisors is an integer number (972237819).

Almost surely, 2^5555644660 is an apocalyptic number.

It is an amenable number.

5555644660 is an abundant number, since it is smaller than the sum of its proper divisors (6111209168).

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

5555644660 is a wasteful number, since it uses less digits than its factorization.

5555644660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277782242 (or 277782240 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The square root of 5555644660 is about 74536.1969783809. The cubic root of 5555644660 is about 1771.1070840139.

The spelling of 5555644660 in words is "five billion, five hundred fifty-five million, six hundred forty-four thousand, six hundred sixty".