7865000004 has 12 divisors (see below), whose sum is σ = 18351666704. Its totient is φ = 2621666664.

The previous prime is 7864999943. The next prime is 7865000027. The reversal of 7865000004 is 4000005687.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327708322 + ... + 327708345.

Almost surely, 2^7865000004 is an apocalyptic number.

It is an amenable number.

7865000004 is an abundant number, since it is smaller than the sum of its proper divisors (10486666700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7865000004 is a wasteful number, since it uses less digits than its factorization.

7865000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655416674 (or 655416672 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 7865000004 is about 88684.8352538358. The cubic root of 7865000004 is about 1988.6861190675.

The spelling of 7865000004 in words is "seven billion, eight hundred sixty-five million, four", and thus it is an aban number.