6453720 has 192 divisors, whose sum is σ = 25945920. Its totient is φ = 1354752.

The previous prime is 6453703. The next prime is 6453721. The reversal of 6453720 is 273546.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6453721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32662 + ... + 32858.

It is an arithmetic number, because the mean of its divisors is an integer number (135135).

Almost surely, 2^6453720 is an apocalyptic number.

6453720 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 6453720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12972960).

6453720 is an abundant number, since it is smaller than the sum of its proper divisors (19492200).

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

6453720 is a wasteful number, since it uses less digits than its factorization.

6453720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 6453720 is about 2540.4172885571. The cubic root of 6453720 is about 186.1815777978.

The spelling of 6453720 in words is "six million, four hundred fifty-three thousand, seven hundred twenty".