1004012065 has 16 divisors (see below), whose sum is σ = 1396327680. Its totient is φ = 678767040.

The previous prime is 1004012047. The next prime is 1004012071. The reversal of 1004012065 is 5602104001.

It is not a de Polignac number, because 1004012065 - 2⁵ = 1004012033 is a prime.

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, 199530 + ... + 204499.

It is an arithmetic number, because the mean of its divisors is an integer number (87270480).

Almost surely, 2^1004012065 is an apocalyptic number.

It is an amenable number.

1004012065 is a deficient number, since it is larger than the sum of its proper divisors (392315615).

1004012065 is an equidigital number, since it uses as much as digits as its factorization.

1004012065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404112.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1004012065 is about 31686.1494189496. The cubic root of 1004012065 is about 1001.3355704574.

Adding to 1004012065 its reverse (5602104001), we get a palindrome (6606116066).

The spelling of 1004012065 in words is "one billion, four million, twelve thousand, sixty-five".