7685665867 has 4 divisors (see below), whose sum is σ = 8384362776. Its totient is φ = 6986968960.

The previous prime is 7685665853. The next prime is 7685665873.

7685665867 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7685665867 - 2¹¹ = 7685663819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7685665799 and 7685665808.

It is not an unprimeable number, because it can be changed into a prime (7685665807) 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 3 ways as a sum of consecutive naturals, for example, 349348438 + ... + 349348459.

It is an arithmetic number, because the mean of its divisors is an integer number (2096090694).

Almost surely, 2^7685665867 is an apocalyptic number.

7685665867 is a deficient number, since it is larger than the sum of its proper divisors (698696909).

7685665867 is a wasteful number, since it uses less digits than its factorization.

7685665867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698696908.

The product of its digits is 101606400, while the sum is 64.

The square root of 7685665867 is about 87667.9295238572. The cubic root of 7685665867 is about 1973.4547217837.

The spelling of 7685665867 in words is "seven billion, six hundred eighty-five million, six hundred sixty-five thousand, eight hundred sixty-seven".