6016721 has 4 divisors (see below), whose sum is σ = 6040944. Its totient is φ = 5992500.

The previous prime is 6016687. The next prime is 6016729. The reversal of 6016721 is 1276106.

6016721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6016721 - 2¹⁰ = 6015697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6016729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11735 + ... + 12236.

It is an arithmetic number, because the mean of its divisors is an integer number (1510236).

Almost surely, 2^6016721 is an apocalyptic number.

It is an amenable number.

6016721 is a deficient number, since it is larger than the sum of its proper divisors (24223).

6016721 is a wasteful number, since it uses less digits than its factorization.

6016721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 6016721 is about 2452.9005279465. The cubic root of 6016721 is about 181.8807031273.

The spelling of 6016721 in words is "six million, sixteen thousand, seven hundred twenty-one".