5561600660 has 96 divisors (see below), whose sum is σ = 15417900288. Its totient is φ = 1631508480.

The previous prime is 5561600651. The next prime is 5561600683. The reversal of 5561600660 is 660061655.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 5561600660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80039 + ... + 132398.

It is an arithmetic number, because the mean of its divisors is an integer number (160603128).

Almost surely, 2^5561600660 is an apocalyptic number.

It is an amenable number.

5561600660 is an abundant number, since it is smaller than the sum of its proper divisors (9856299628).

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

5561600660 is a wasteful number, since it uses less digits than its factorization.

5561600660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212481 (or 212479 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 5561600660 is about 74576.1400181050. The cubic root of 5561600660 is about 1771.7397706508.

The spelling of 5561600660 in words is "five billion, five hundred sixty-one million, six hundred thousand, six hundred sixty".