7664487847 has 8 divisors (see below), whose sum is σ = 7780586112. Its totient is φ = 7548439800.

The previous prime is 7664487799. The next prime is 7664487851. The reversal of 7664487847 is 7487844667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7664487847 - 2²⁷ = 7530270119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664487947) 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 7 ways as a sum of consecutive naturals, for example, 393222 + ... + 412252.

It is an arithmetic number, because the mean of its divisors is an integer number (972573264).

Almost surely, 2^7664487847 is an apocalyptic number.

7664487847 is a deficient number, since it is larger than the sum of its proper divisors (116098265).

7664487847 is a wasteful number, since it uses less digits than its factorization.

7664487847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25109.

The product of its digits is 50577408, while the sum is 61.

The square root of 7664487847 is about 87547.0607559157. The cubic root of 7664487847 is about 1971.6404217984.

The spelling of 7664487847 in words is "seven billion, six hundred sixty-four million, four hundred eighty-seven thousand, eight hundred forty-seven".