6618869667 has 16 divisors (see below), whose sum is σ = 9833525280. Its totient is φ = 4400073216.

The previous prime is 6618869657. The next prime is 6618869681. The reversal of 6618869667 is 7669688166.

6618869667 is a `hidden beast` number, since 6 + 618 + 8 + 6 + 9 + 6 + 6 + 7 = 666.

It is not a de Polignac number, because 6618869667 - 2⁴ = 6618869651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6618869657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337698 + ... + 356759.

It is an arithmetic number, because the mean of its divisors is an integer number (614595330).

Almost surely, 2^6618869667 is an apocalyptic number.

6618869667 is a deficient number, since it is larger than the sum of its proper divisors (3214655613).

6618869667 is a wasteful number, since it uses less digits than its factorization.

6618869667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694819 (or 694813 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The square root of 6618869667 is about 81356.4359285730. The cubic root of 6618869667 is about 1877.5633956311.

The spelling of 6618869667 in words is "six billion, six hundred eighteen million, eight hundred sixty-nine thousand, six hundred sixty-seven".