1040000065 has 32 divisors (see below), whose sum is σ = 1364378400. Its totient is φ = 756449280.

The previous prime is 1040000051. The next prime is 1040000077. The reversal of 1040000065 is 5600000401.

It can be written as a sum of positive squares in 16 ways, for example, as 4190209 + 1035809856 = 2047^2 + 32184^2 .

It is not a de Polignac number, because 1040000065 - 2¹³ = 1039991873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1622145 + ... + 1622785.

It is an arithmetic number, because the mean of its divisors is an integer number (42636825).

Almost surely, 2^1040000065 is an apocalyptic number.

It is an amenable number.

1040000065 is a deficient number, since it is larger than the sum of its proper divisors (324378335).

1040000065 is a wasteful number, since it uses less digits than its factorization.

1040000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1040000065 is about 32249.0320009764. The cubic root of 1040000065 is about 1013.1594249277.

Adding to 1040000065 its reverse (5600000401), we get a palindrome (6640000466).

It can be divided in two parts, 10400000 and 65, that multiplied together give a square (676000000 = 26000²).

The spelling of 1040000065 in words is "one billion, forty million, sixty-five", and thus it is an aban number and an uban number.