3091640660 has 24 divisors (see below), whose sum is σ = 6643434336. Its totient is φ = 1207896480.

The previous prime is 3091640653. The next prime is 3091640681. The reversal of 3091640660 is 660461903.

It is a self number, because there is not a number n which added to its sum of digits gives 3091640660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1796606 + ... + 1798325.

It is an arithmetic number, because the mean of its divisors is an integer number (276809764).

Almost surely, 2^3091640660 is an apocalyptic number.

It is an amenable number.

3091640660 is an abundant number, since it is smaller than the sum of its proper divisors (3551793676).

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

3091640660 is a wasteful number, since it uses less digits than its factorization.

3091640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594983 (or 3594981 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3091640660 is about 55602.5238635801. The cubic root of 3091640660 is about 1456.7879375694.

The spelling of 3091640660 in words is "three billion, ninety-one million, six hundred forty thousand, six hundred sixty".