7640237888 has 56 divisors (see below), whose sum is σ = 16020775680. Its totient is φ = 3607718400.

The previous prime is 7640237887. The next prime is 7640237939. The reversal of 7640237888 is 8887320467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640237887) 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, 83438 + ... + 149138.

It is an arithmetic number, because the mean of its divisors is an integer number (286085280).

Almost surely, 2^7640237888 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 7640237888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8010387840).

7640237888 is an abundant number, since it is smaller than the sum of its proper divisors (8380537792).

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

7640237888 is a wasteful number, since it uses less digits than its factorization.

7640237888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65815 (or 65805 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The square root of 7640237888 is about 87408.4543279424. The cubic root of 7640237888 is about 1969.5588426983.

The spelling of 7640237888 in words is "seven billion, six hundred forty million, two hundred thirty-seven thousand, eight hundred eighty-eight".