7040385864 has 160 divisors (see below), whose sum is σ = 20028888000. Its totient is φ = 2310311808.

The previous prime is 7040385853. The next prime is 7040385881. The reversal of 7040385864 is 4685830407.

It is a super-2 number, since 2×7040385864² = 99134066228022052992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18576027 + ... + 18576405.

It is an arithmetic number, because the mean of its divisors is an integer number (125180550).

Almost surely, 2^7040385864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7040385864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10014444000).

7040385864 is an abundant number, since it is smaller than the sum of its proper divisors (12988502136).

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

7040385864 is a wasteful number, since it uses less digits than its factorization.

7040385864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 7040385864 is about 83907.0072401584. The cubic root of 7040385864 is about 1916.6029580269.

The spelling of 7040385864 in words is "seven billion, forty million, three hundred eighty-five thousand, eight hundred sixty-four".