6440060265 has 16 divisors (see below), whose sum is σ = 10337667648. Its totient is φ = 3423508416.

The previous prime is 6440060261. The next prime is 6440060287. The reversal of 6440060265 is 5620600446.

It is not a de Polignac number, because 6440060265 - 2² = 6440060261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6440060261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694642 + ... + 703851.

It is an arithmetic number, because the mean of its divisors is an integer number (646104228).

Almost surely, 2^6440060265 is an apocalyptic number.

It is an amenable number.

6440060265 is a deficient number, since it is larger than the sum of its proper divisors (3897607383).

6440060265 is a wasteful number, since it uses less digits than its factorization.

6440060265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398808.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 6440060265 is about 80249.9860747651. The cubic root of 6440060265 is about 1860.5012971275.

The spelling of 6440060265 in words is "six billion, four hundred forty million, sixty thousand, two hundred sixty-five".