6230721 has 32 divisors (see below), whose sum is σ = 10395648. Its totient is φ = 3237120.

The previous prime is 6230711. The next prime is 6230759. The reversal of 6230721 is 1270326.

It is a happy number.

It is not a de Polignac number, because 6230721 - 2⁹ = 6230209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

6230721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6230711) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10786 + ... + 11348.

It is an arithmetic number, because the mean of its divisors is an integer number (324864).

Almost surely, 2^6230721 is an apocalyptic number.

It is an amenable number.

6230721 is a deficient number, since it is larger than the sum of its proper divisors (4164927).

6230721 is a wasteful number, since it uses less digits than its factorization.

6230721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 6230721 is about 2496.1412219664. The cubic root of 6230721 is about 184.0119813402.

The spelling of 6230721 in words is "six million, two hundred thirty thousand, seven hundred twenty-one".