6465139 has 8 divisors (see below), whose sum is σ = 6787872. Its totient is φ = 6145920.

The previous prime is 6465133. The next prime is 6465163. The reversal of 6465139 is 9315646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6465139 - 2³ = 6465131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6465131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3387 + ... + 4939.

It is an arithmetic number, because the mean of its divisors is an integer number (848484).

Almost surely, 2^6465139 is an apocalyptic number.

6465139 is a deficient number, since it is larger than the sum of its proper divisors (322733).

6465139 is a wasteful number, since it uses less digits than its factorization.

6465139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757.

The product of its digits is 19440, while the sum is 34.

The square root of 6465139 is about 2542.6637607045. The cubic root of 6465139 is about 186.2913209522.

The spelling of 6465139 in words is "six million, four hundred sixty-five thousand, one hundred thirty-nine".