7664457705 has 48 divisors (see below), whose sum is σ = 12737559744. Its totient is φ = 3935276800.

The previous prime is 7664457673. The next prime is 7664457707. The reversal of 7664457705 is 5077544667.

It is a happy number.

It is not a de Polignac number, because 7664457705 - 2⁵ = 7664457673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7664457707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5890555 + ... + 5891855.

It is an arithmetic number, because the mean of its divisors is an integer number (265365828).

Almost surely, 2^7664457705 is an apocalyptic number.

It is an amenable number.

7664457705 is a deficient number, since it is larger than the sum of its proper divisors (5073102039).

7664457705 is a wasteful number, since it uses less digits than its factorization.

7664457705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 51.

The square root of 7664457705 is about 87546.8886083338. Note that the first 3 decimals coincide. The cubic root of 7664457705 is about 1971.6378371828.

The spelling of 7664457705 in words is "seven billion, six hundred sixty-four million, four hundred fifty-seven thousand, seven hundred five".