2846721 has 4 divisors (see below), whose sum is σ = 3795632. Its totient is φ = 1897812.

The previous prime is 2846719. The next prime is 2846731. The reversal of 2846721 is 1276482.

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 not a de Polignac number, because 2846721 - 2¹ = 2846719 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2846731) 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, 474451 + ... + 474456.

It is an arithmetic number, because the mean of its divisors is an integer number (948908).

It is a Proth number, since it is equal to 695 ⋅ 2¹² + 1 and 695 < 2¹².

2^2846721 is an apocalyptic number.

It is an amenable number.

2846721 is a deficient number, since it is larger than the sum of its proper divisors (948911).

2846721 is an equidigital number, since it uses as much as digits as its factorization.

2846721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948910.

The product of its digits is 5376, while the sum is 30.

The square root of 2846721 is about 1687.2228661324. Note that the first 3 decimals coincide. The cubic root of 2846721 is about 141.7255991642.

The spelling of 2846721 in words is "two million, eight hundred forty-six thousand, seven hundred twenty-one".