6441720 has 32 divisors (see below), whose sum is σ = 19325520. Its totient is φ = 1717760.

The previous prime is 6441709. The next prime is 6441733. The reversal of 6441720 is 271446.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26721 + ... + 26960.

Almost surely, 2^6441720 is an apocalyptic number.

6441720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6441720 is an abundant number, since it is smaller than the sum of its proper divisors (12883800).

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

6441720 is a wasteful number, since it uses less digits than its factorization.

6441720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53695 (or 53691 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 6441720 is about 2538.0543729400. The cubic root of 6441720 is about 186.0661113121.

The spelling of 6441720 in words is "six million, four hundred forty-one thousand, seven hundred twenty".