7664664667 has 4 divisors (see below), whose sum is σ = 8361452376. Its totient is φ = 6967876960.

The previous prime is 7664664641. The next prime is 7664664671.

7664664667 is nontrivially palindromic in base 10.

7664664667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-7664664667 is a prime.

It is a super-3 number, since 3×7664664667³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664665667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348393838 + ... + 348393859.

It is an arithmetic number, because the mean of its divisors is an integer number (2090363094).

Almost surely, 2^7664664667 is an apocalyptic number.

7664664667 is a deficient number, since it is larger than the sum of its proper divisors (696787709).

7664664667 is a wasteful number, since it uses less digits than its factorization.

7664664667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696787708.

The product of its digits is 36578304, while the sum is 58.

The square root of 7664664667 is about 87548.0706069528. The cubic root of 7664664667 is about 1971.6555836194.

The spelling of 7664664667 in words is "seven billion, six hundred sixty-four million, six hundred sixty-four thousand, six hundred sixty-seven".