2647750680 has 320 divisors, whose sum is σ = 9611252640. Its totient is φ = 651276288.

The previous prime is 2647750549. The next prime is 2647750709. The reversal of 2647750680 is 860577462.

2647750680 is a `hidden beast` number, since 2 + 64 + 7 + 7 + 506 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2918787 + ... + 2919693.

Almost surely, 2^2647750680 is an apocalyptic number.

2647750680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2647750680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4805626320).

2647750680 is an abundant number, since it is smaller than the sum of its proper divisors (6963501960).

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

2647750680 is a wasteful number, since it uses less digits than its factorization.

2647750680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 2647750680 is about 51456.2987398044. The cubic root of 2647750680 is about 1383.4358618867.

The spelling of 2647750680 in words is "two billion, six hundred forty-seven million, seven hundred fifty thousand, six hundred eighty".