6465128 has 16 divisors (see below), whose sum is σ = 12178500. Its totient is φ = 3217536.

The previous prime is 6465127. The next prime is 6465131. The reversal of 6465128 is 8215646.

It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 3364 = 2542^2 + 58^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6465094 and 6465103.

It is not an unprimeable number, because it can be changed into a prime (6465127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 3596.

Almost surely, 2^6465128 is an apocalyptic number.

It is an amenable number.

6465128 is a deficient number, since it is larger than the sum of its proper divisors (5713372).

6465128 is a wasteful number, since it uses less digits than its factorization.

6465128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764 (or 3760 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 6465128 is about 2542.6615976177. The cubic root of 6465128 is about 186.2912152981.

The spelling of 6465128 in words is "six million, four hundred sixty-five thousand, one hundred twenty-eight".