7663566240 has 144 divisors (see below), whose sum is σ = 28529426016. Its totient is φ = 1857830400.

The previous prime is 7663566199. The next prime is 7663566241. The reversal of 7663566240 is 426653667.

7663566240 is a `hidden beast` number, since 7 + 6 + 63 + 566 + 24 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7663566241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226066 + ... + 257745.

It is an arithmetic number, because the mean of its divisors is an integer number (198121014).

Almost surely, 2^7663566240 is an apocalyptic number.

It is an amenable number.

7663566240 is an abundant number, since it is smaller than the sum of its proper divisors (20865859776).

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

7663566240 is a wasteful number, since it uses less digits than its factorization.

7663566240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483843 (or 483832 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The square root of 7663566240 is about 87541.7971028697. The cubic root of 7663566240 is about 1971.5613927975.

The spelling of 7663566240 in words is "seven billion, six hundred sixty-three million, five hundred sixty-six thousand, two hundred forty".