7665445667 has 8 divisors (see below), whose sum is σ = 8456263920. Its totient is φ = 6890287360.

The previous prime is 7665445663. The next prime is 7665445721.

7665445667 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 7665445667 - 2² = 7665445663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7665445663) 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, 3913958 + ... + 3915915.

It is an arithmetic number, because the mean of its divisors is an integer number (1057032990).

Almost surely, 2^7665445667 is an apocalyptic number.

7665445667 is a deficient number, since it is larger than the sum of its proper divisors (790818253).

7665445667 is a wasteful number, since it uses less digits than its factorization.

7665445667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7829973.

The product of its digits is 25401600, while the sum is 56.

The square root of 7665445667 is about 87552.5309000260. The cubic root of 7665445667 is about 1971.7225493980.

The spelling of 7665445667 in words is "seven billion, six hundred sixty-five million, four hundred forty-five thousand, six hundred sixty-seven".