3075721 has 8 divisors (see below), whose sum is σ = 3501504. Its totient is φ = 2674320.

The previous prime is 3075713. The next prime is 3075797. The reversal of 3075721 is 1275703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3075721 - 2³ = 3075713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3075221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5826 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (437688).

Almost surely, 2^3075721 is an apocalyptic number.

It is an amenable number.

3075721 is a deficient number, since it is larger than the sum of its proper divisors (425783).

3075721 is a wasteful number, since it uses less digits than its factorization.

3075721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 3075721 is about 1753.7733605002. The cubic root of 3075721 is about 145.4283173708.

The spelling of 3075721 in words is "three million, seventy-five thousand, seven hundred twenty-one".