6465775 has 6 divisors (see below), whose sum is σ = 8017592. Its totient is φ = 5172600.

The previous prime is 6465749. The next prime is 6465779. The reversal of 6465775 is 5775646.

It is a happy number.

It is not a de Polignac number, because 6465775 - 2¹¹ = 6463727 is a prime.

It is a Duffinian number.

6465775 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129291 + ... + 129340.

Almost surely, 2^6465775 is an apocalyptic number.

6465775 is a deficient number, since it is larger than the sum of its proper divisors (1551817).

6465775 is a wasteful number, since it uses less digits than its factorization.

6465775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258641 (or 258636 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 6465775 is about 2542.7888233198. The cubic root of 6465775 is about 186.2974294775.

The spelling of 6465775 in words is "six million, four hundred sixty-five thousand, seven hundred seventy-five".