7706140660 has 12 divisors (see below), whose sum is σ = 16182895428. Its totient is φ = 3082456256.

The previous prime is 7706140643. The next prime is 7706140661. The reversal of 7706140660 is 660416077.

It can be written as a sum of positive squares in 2 ways, for example, as 3132864784 + 4573275876 = 55972^2 + 67626^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7706140661) 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, 192653497 + ... + 192653536.

It is an arithmetic number, because the mean of its divisors is an integer number (1348574619).

Almost surely, 2^7706140660 is an apocalyptic number.

It is an amenable number.

7706140660 is an abundant number, since it is smaller than the sum of its proper divisors (8476754768).

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

7706140660 is a wasteful number, since it uses less digits than its factorization.

7706140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385307042 (or 385307040 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 7706140660 is about 87784.6265584128. The cubic root of 7706140660 is about 1975.2056110244.

The spelling of 7706140660 in words is "seven billion, seven hundred six million, one hundred forty thousand, six hundred sixty".