7070394640 has 80 divisors (see below), whose sum is σ = 16600008960. Its totient is φ = 2800512000.

The previous prime is 7070394631. The next prime is 7070394659. The reversal of 7070394640 is 464930707.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7070394593 and 7070394602.

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, 8230531 + ... + 8231389.

It is an arithmetic number, because the mean of its divisors is an integer number (207500112).

Almost surely, 2^7070394640 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 7070394640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8300004480).

7070394640 is an abundant number, since it is smaller than the sum of its proper divisors (9529614320).

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

7070394640 is a wasteful number, since it uses less digits than its factorization.

7070394640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 7070394640 is about 84085.6387262415. The cubic root of 7070394640 is about 1919.3221927478.

The spelling of 7070394640 in words is "seven billion, seventy million, three hundred ninety-four thousand, six hundred forty".