6712421 has 2 divisors, whose sum is σ = 6712422. Its totient is φ = 6712420.

The previous prime is 6712417. The next prime is 6712441. The reversal of 6712421 is 1242176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 81796 = 2575^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 6712421 - 2² = 6712417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6712441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3356210 + 3356211.

It is an arithmetic number, because the mean of its divisors is an integer number (3356211).

Almost surely, 2^6712421 is an apocalyptic number.

It is an amenable number.

6712421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6712421 is an equidigital number, since it uses as much as digits as its factorization.

6712421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 6712421 is about 2590.8340355955. The cubic root of 6712421 is about 188.6367892661.

Adding to 6712421 its reverse (1242176), we get a palindrome (7954597).

The spelling of 6712421 in words is "six million, seven hundred twelve thousand, four hundred twenty-one".