6747421680 has 240 divisors, whose sum is σ = 23725106496. Its totient is φ = 1715281920.

The previous prime is 6747421649. The next prime is 6747421693. The reversal of 6747421680 is 861247476.

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 7170010 + ... + 7170950.

Almost surely, 2^6747421680 is an apocalyptic number.

6747421680 is a gapful number since it is divisible by the number (60) 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 6747421680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11862553248).

6747421680 is an abundant number, since it is smaller than the sum of its proper divisors (16977684816).

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

6747421680 is a wasteful number, since it uses less digits than its factorization.

6747421680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 6747421680 is about 82142.6909712605. The cubic root of 6747421680 is about 1889.6409160764.

The spelling of 6747421680 in words is "six billion, seven hundred forty-seven million, four hundred twenty-one thousand, six hundred eighty".