6475649 has 2 divisors, whose sum is σ = 6475650. Its totient is φ = 6475648.

The previous prime is 6475643. The next prime is 6475669. The reversal of 6475649 is 9465746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6076225 + 399424 = 2465^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 6475649 - 2¹⁶ = 6410113 is a prime.

It is a super-3 number, since 3×6475649³ (a number of 21 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6475643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237824 + 3237825.

It is an arithmetic number, because the mean of its divisors is an integer number (3237825).

Almost surely, 2^6475649 is an apocalyptic number.

It is an amenable number.

6475649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6475649 is an equidigital number, since it uses as much as digits as its factorization.

6475649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 6475649 is about 2544.7296516526. The cubic root of 6475649 is about 186.3922139508.

The spelling of 6475649 in words is "six million, four hundred seventy-five thousand, six hundred forty-nine".