7540660660 has 24 divisors (see below), whose sum is σ = 17053494696. Its totient is φ = 2784243840.

The previous prime is 7540660579. The next prime is 7540660661. The reversal of 7540660660 is 660660457.

It can be written as a sum of positive squares in 4 ways, for example, as 115047076 + 7425613584 = 10726^2 + 86172^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540660661) 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 7 ways as a sum of consecutive naturals, for example, 14501011 + ... + 14501530.

It is an arithmetic number, because the mean of its divisors is an integer number (710562279).

Almost surely, 2^7540660660 is an apocalyptic number.

It is an amenable number.

7540660660 is an abundant number, since it is smaller than the sum of its proper divisors (9512834036).

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

7540660660 is a wasteful number, since it uses less digits than its factorization.

7540660660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29002563 (or 29002561 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 7540660660 is about 86836.9774923103. The cubic root of 7540660660 is about 1960.9648050908.

The spelling of 7540660660 in words is "seven billion, five hundred forty million, six hundred sixty thousand, six hundred sixty".