6523969 has 2 divisors, whose sum is σ = 6523970. Its totient is φ = 6523968.

The previous prime is 6523963. The next prime is 6524009. The reversal of 6523969 is 9693256.

It is an a-pointer prime, because the next prime (6524009) can be obtained adding 6523969 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 2362369 = 2040^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 6523969 - 2⁷ = 6523841 is a prime.

It is a super-2 number, since 2×6523969² = 85124343025922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6523963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261984 + 3261985.

It is an arithmetic number, because the mean of its divisors is an integer number (3261985).

Almost surely, 2^6523969 is an apocalyptic number.

It is an amenable number.

6523969 is a deficient number, since it is larger than the sum of its proper divisors (1).

6523969 is an equidigital number, since it uses as much as digits as its factorization.

6523969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 6523969 is about 2554.2061389011. The cubic root of 6523969 is about 186.8546727553.

The spelling of 6523969 in words is "six million, five hundred twenty-three thousand, nine hundred sixty-nine".