7066608640 has 352 divisors, whose sum is σ = 21624180480. Its totient is φ = 2155216896.

The previous prime is 7066608631. The next prime is 7066608643. The reversal of 7066608640 is 468066607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7066608643) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13511419 + ... + 13511941.

Almost surely, 2^7066608640 is an apocalyptic number.

7066608640 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 7066608640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10812090240).

7066608640 is an abundant number, since it is smaller than the sum of its proper divisors (14557571840).

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

7066608640 is a wasteful number, since it uses less digits than its factorization.

7066608640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 7066608640 is about 84063.1229493647. The cubic root of 7066608640 is about 1918.9795503358.

The spelling of 7066608640 in words is "seven billion, sixty-six million, six hundred eight thousand, six hundred forty".