6747390720 has 504 divisors, whose sum is σ = 27720613536. Its totient is φ = 1540767744.

The previous prime is 6747390719. The next prime is 6747390721. The reversal of 6747390720 is 270937476.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6747390719) and next prime (6747390721).

It is a tau number, because it is divible by the number of its divisors (504).

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

It is not an unprimeable number, because it can be changed into a prime (6747390721) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6531324 + ... + 6532356.

It is a vampire number, since it can be written as 74376 ⋅ 90720 (with its own digits).

Almost surely, 2^6747390720 is an apocalyptic number.

6747390720 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 6747390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13860306768).

6747390720 is an abundant number, since it is smaller than the sum of its proper divisors (20973222816).

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

6747390720 is an equidigital number, since it uses as much as digits as its factorization.

6747390720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 6747390720 is about 82142.5025184892. The cubic root of 6747390720 is about 1889.6380259170.

The spelling of 6747390720 in words is "six billion, seven hundred forty-seven million, three hundred ninety thousand, seven hundred twenty".