7664123689 has 8 divisors (see below), whose sum is σ = 8114135040. Its totient is φ = 7218776016.

The previous prime is 7664123653. The next prime is 7664123693. The reversal of 7664123689 is 9863214667.

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 7664123689 - 2⁹ = 7664123177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664129689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162537 + ... + 1169110.

It is an arithmetic number, because the mean of its divisors is an integer number (1014266880).

Almost surely, 2^7664123689 is an apocalyptic number.

It is an amenable number.

7664123689 is a deficient number, since it is larger than the sum of its proper divisors (450011351).

7664123689 is a wasteful number, since it uses less digits than its factorization.

7664123689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331839.

The product of its digits is 2612736, while the sum is 52.

The square root of 7664123689 is about 87544.9809469395. The cubic root of 7664123689 is about 1971.6091955326.

The spelling of 7664123689 in words is "seven billion, six hundred sixty-four million, one hundred twenty-three thousand, six hundred eighty-nine".