6465109 has 6 divisors (see below), whose sum is σ = 7520694. Its totient is φ = 5541480.

The previous prime is 6465101. The next prime is 6465127. The reversal of 6465109 is 9015646.

6465109 = T₄₈₉ + T₄₉₀ + ... + T₅₃₇.

It can be written as a sum of positive squares in only one way, i.e., 5049009 + 1416100 = 2247^2 + 1190^2 .

It is not a de Polignac number, because 6465109 - 2³ = 6465101 is a prime.

It is a Duffinian number.

6465109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465101) 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 in 5 ways as a sum of consecutive naturals, for example, 65922 + ... + 66019.

It is an arithmetic number, because the mean of its divisors is an integer number (1253449).

Almost surely, 2^6465109 is an apocalyptic number.

It is an amenable number.

6465109 is a deficient number, since it is larger than the sum of its proper divisors (1055585).

6465109 is a wasteful number, since it uses less digits than its factorization.

6465109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131955 (or 131948 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 6465109 is about 2542.6578613726. The cubic root of 6465109 is about 186.2910328043.

The spelling of 6465109 in words is "six million, four hundred sixty-five thousand, one hundred nine".