7947660540 has 48 divisors (see below), whose sum is σ = 23020814880. Its totient is φ = 2046293760.

The previous prime is 7947660509. The next prime is 7947660641. The reversal of 7947660540 is 450667497.

It is a self number, because there is not a number n which added to its sum of digits gives 7947660540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2282071 + ... + 2285550.

It is an arithmetic number, because the mean of its divisors is an integer number (479600310).

Almost surely, 2^7947660540 is an apocalyptic number.

It is an amenable number.

7947660540 is an abundant number, since it is smaller than the sum of its proper divisors (15073154340).

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

7947660540 is a wasteful number, since it uses less digits than its factorization.

7947660540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567662 (or 4567660 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 7947660540 is about 89149.6524951163. The cubic root of 7947660540 is about 1995.6288317374.

The spelling of 7947660540 in words is "seven billion, nine hundred forty-seven million, six hundred sixty thousand, five hundred forty".