7075071640 has 128 divisors (see below), whose sum is σ = 19623260160. Its totient is φ = 2235631104.

The previous prime is 7075071637. The next prime is 7075071659. The reversal of 7075071640 is 461705707.

It is a super-2 number, since 2×7075071640² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7075071640.

It is a congruent number.

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, 3300409 + ... + 3302551.

It is an arithmetic number, because the mean of its divisors is an integer number (153306720).

Almost surely, 2^7075071640 is an apocalyptic number.

7075071640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7075071640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9811630080).

7075071640 is an abundant number, since it is smaller than the sum of its proper divisors (12548188520).

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

7075071640 is a wasteful number, since it uses less digits than its factorization.

7075071640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 7075071640 is about 84113.4450608225. The cubic root of 7075071640 is about 1919.7453040333.

The spelling of 7075071640 in words is "seven billion, seventy-five million, seventy-one thousand, six hundred forty".