7120566640 has 40 divisors (see below), whose sum is σ = 18060348528. Its totient is φ = 2589296640.

The previous prime is 7120566623. The next prime is 7120566647. The reversal of 7120566640 is 466650217.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 7120566640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7120566647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4044897 + ... + 4046656.

Almost surely, 2^7120566640 is an apocalyptic number.

It is an amenable number.

7120566640 is an abundant number, since it is smaller than the sum of its proper divisors (10939781888).

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

7120566640 is a wasteful number, since it uses less digits than its factorization.

7120566640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8091577 (or 8091571 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 7120566640 is about 84383.4500361297. The cubic root of 7120566640 is about 1923.8513766100.

The spelling of 7120566640 in words is "seven billion, one hundred twenty million, five hundred sixty-six thousand, six hundred forty".