6180721 has 8 divisors (see below), whose sum is σ = 6514560. Its totient is φ = 5852352.

The previous prime is 6180689. The next prime is 6180731. The reversal of 6180721 is 1270816.

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

It is a cyclic number.

It is not a de Polignac number, because 6180721 - 2⁵ = 6180689 is a prime.

It is a Duffinian number.

6180721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6180731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (814320).

Almost surely, 2^6180721 is an apocalyptic number.

It is an amenable number.

6180721 is a deficient number, since it is larger than the sum of its proper divisors (333839).

6180721 is a wasteful number, since it uses less digits than its factorization.

6180721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 6180721 is about 2486.1055890690. The cubic root of 6180721 is about 183.5184418700.

The spelling of 6180721 in words is "six million, one hundred eighty thousand, seven hundred twenty-one".