6400062065 has 16 divisors (see below), whose sum is σ = 7941812736. Its totient is φ = 4946140800.

The previous prime is 6400062061. The next prime is 6400062073. The reversal of 6400062065 is 5602600046.

It is not a de Polignac number, because 6400062065 - 2² = 6400062061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400062061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52349 + ... + 124661.

It is an arithmetic number, because the mean of its divisors is an integer number (496363296).

Almost surely, 2^6400062065 is an apocalyptic number.

It is an amenable number.

6400062065 is a deficient number, since it is larger than the sum of its proper divisors (1541750671).

6400062065 is a wasteful number, since it uses less digits than its factorization.

6400062065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72920.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 6400062065 is about 80000.3879053096. The cubic root of 6400062065 is about 1856.6415350968.

The spelling of 6400062065 in words is "six billion, four hundred million, sixty-two thousand, sixty-five".