6277656640 has 112 divisors (see below), whose sum is σ = 16097097600. Its totient is φ = 2323177472.

The previous prime is 6277656631. The next prime is 6277656641. The reversal of 6277656640 is 466567726.

It is not an unprimeable number, because it can be changed into a prime (6277656641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311181 + ... + 330739.

Almost surely, 2^6277656640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6277656640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8048548800).

6277656640 is an abundant number, since it is smaller than the sum of its proper divisors (9819440960).

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

6277656640 is a wasteful number, since it uses less digits than its factorization.

6277656640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19652 (or 19642 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The square root of 6277656640 is about 79231.6643773182. The cubic root of 6277656640 is about 1844.7287630391.

The spelling of 6277656640 in words is "six billion, two hundred seventy-seven million, six hundred fifty-six thousand, six hundred forty".