6499965 has 16 divisors (see below), whose sum is σ = 10479168. Its totient is φ = 3440256.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499965 is 5699946.

It is a happy number.

It is not a de Polignac number, because 6499965 - 2⁴ = 6499949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (654948).

Almost surely, 2^6499965 is an apocalyptic number.

It is an amenable number.

6499965 is a deficient number, since it is larger than the sum of its proper divisors (3979203).

6499965 is a wasteful number, since it uses less digits than its factorization.

6499965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308.

The product of its digits is 524880, while the sum is 48.

The square root of 6499965 is about 2549.5028927224. The cubic root of 6499965 is about 186.6252228713.

The spelling of 6499965 in words is "six million, four hundred ninety-nine thousand, nine hundred sixty-five".