6959621 has 2 divisors, whose sum is σ = 6959622. Its totient is φ = 6959620.

The previous prime is 6959597. The next prime is 6959651. The reversal of 6959621 is 1269596.

6959621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 2608225 = 2086^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 6959621 - 2¹⁸ = 6697477 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6959651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3479810 + 3479811.

It is an arithmetic number, because the mean of its divisors is an integer number (3479811).

Almost surely, 2^6959621 is an apocalyptic number.

It is an amenable number.

6959621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6959621 is an equidigital number, since it uses as much as digits as its factorization.

6959621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 6959621 is about 2638.1093608871. The cubic root of 6959621 is about 190.9245885241.

The spelling of 6959621 in words is "six million, nine hundred fifty-nine thousand, six hundred twenty-one".