6346640660 has 24 divisors (see below), whose sum is σ = 13526872800. Its totient is φ = 2500765344.

The previous prime is 6346640611. The next prime is 6346640669. The reversal of 6346640660 is 660466436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6346640669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366810 + ... + 2369489.

It is an arithmetic number, because the mean of its divisors is an integer number (563619700).

Almost surely, 2^6346640660 is an apocalyptic number.

It is an amenable number.

6346640660 is an abundant number, since it is smaller than the sum of its proper divisors (7180232140).

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

6346640660 is a wasteful number, since it uses less digits than its factorization.

6346640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736375 (or 4736373 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 41.

The square root of 6346640660 is about 79665.8060901915. The cubic root of 6346640660 is about 1851.4612910220.

The spelling of 6346640660 in words is "six billion, three hundred forty-six million, six hundred forty thousand, six hundred sixty".