5635640660 has 48 divisors (see below), whose sum is σ = 13156372992. Its totient is φ = 2013724800.

The previous prime is 5635640639. The next prime is 5635640663. The reversal of 5635640660 is 660465365.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5635640663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341546 + ... + 357665.

It is an arithmetic number, because the mean of its divisors is an integer number (274091104).

Almost surely, 2^5635640660 is an apocalyptic number.

It is an amenable number.

5635640660 is an abundant number, since it is smaller than the sum of its proper divisors (7520732332).

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

5635640660 is a wasteful number, since it uses less digits than its factorization.

5635640660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699264 (or 699262 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 5635640660 is about 75070.9042172798. The cubic root of 5635640660 is about 1779.5673589771.

The spelling of 5635640660 in words is "five billion, six hundred thirty-five million, six hundred forty thousand, six hundred sixty".