6146721 has 24 divisors (see below), whose sum is σ = 10387520. Its totient is φ = 3429216.

The previous prime is 6146713. The next prime is 6146729. The reversal of 6146721 is 1276416.

It is an interprime number because it is at equal distance from previous prime (6146713) and next prime (6146729).

It is not a de Polignac number, because 6146721 - 2³ = 6146713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6146729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575 + ... + 3843.

Almost surely, 2^6146721 is an apocalyptic number.

It is an amenable number.

6146721 is a deficient number, since it is larger than the sum of its proper divisors (4240799).

6146721 is a wasteful number, since it uses less digits than its factorization.

6146721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2322 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 6146721 is about 2479.2581551746. The cubic root of 6146721 is about 183.1813127300.

The spelling of 6146721 in words is "six million, one hundred forty-six thousand, seven hundred twenty-one".