6748161840 has 400 divisors, whose sum is σ = 27655372800. Its totient is φ = 1492369920.

The previous prime is 6748161821. The next prime is 6748161841. The reversal of 6748161840 is 481618476.

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 (6748161841) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1403761 + ... + 1408559.

It is an arithmetic number, because the mean of its divisors is an integer number (69138432).

Almost surely, 2^6748161840 is an apocalyptic number.

6748161840 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 6748161840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13827686400).

6748161840 is an abundant number, since it is smaller than the sum of its proper divisors (20907210960).

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

6748161840 is a wasteful number, since it uses less digits than its factorization.

6748161840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862 (or 4847 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 6748161840 is about 82147.1961785672. The cubic root of 6748161840 is about 1889.7100084176.

The spelling of 6748161840 in words is "six billion, seven hundred forty-eight million, one hundred sixty-one thousand, eight hundred forty".