6752421 has 12 divisors (see below), whose sum is σ = 10503948. Its totient is φ = 4155264.

The previous prime is 6752407. The next prime is 6752479. The reversal of 6752421 is 1242576.

It can be written as a sum of positive squares in 2 ways, for example, as 1512900 + 5239521 = 1230^2 + 2289^2 .

It is not a de Polignac number, because 6752421 - 2⁶ = 6752357 is a prime.

It is a super-2 number, since 2×6752421² = 91190378722482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6752401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28740 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (875329).

Almost surely, 2^6752421 is an apocalyptic number.

It is an amenable number.

6752421 is a deficient number, since it is larger than the sum of its proper divisors (3751527).

6752421 is a wasteful number, since it uses less digits than its factorization.

6752421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57732 (or 57729 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 6752421 is about 2598.5420912504. The cubic root of 6752421 is about 189.0107493676.

Adding to 6752421 its reverse (1242576), we get a palindrome (7994997).

The spelling of 6752421 in words is "six million, seven hundred fifty-two thousand, four hundred twenty-one".