3004721 has 4 divisors (see below), whose sum is σ = 3016944. Its totient is φ = 2992500.

The previous prime is 3004681. The next prime is 3004723. The reversal of 3004721 is 1274003.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1274003 = 653 ⋅1951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3004721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3004721.

It is not an unprimeable number, because it can be changed into a prime (3004723) 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, 5735 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (754236).

Almost surely, 2^3004721 is an apocalyptic number.

It is an amenable number.

3004721 is a deficient number, since it is larger than the sum of its proper divisors (12223).

3004721 is a wasteful number, since it uses less digits than its factorization.

3004721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 3004721 is about 1733.4131071386. The cubic root of 3004721 is about 144.3005713831.

Adding to 3004721 its reverse (1274003), we get a palindrome (4278724).

The spelling of 3004721 in words is "three million, four thousand, seven hundred twenty-one".