6688154469 has 4 divisors (see below), whose sum is σ = 8917539296. Its totient is φ = 4458769644.

The previous prime is 6688154461. The next prime is 6688154503. The reversal of 6688154469 is 9644518866.

6688154469 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6688154469 - 2³ = 6688154461 is a prime.

It is a super-2 number, since 2×6688154469² = 89462820402409343922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688154461) 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, 1114692409 + ... + 1114692414.

It is an arithmetic number, because the mean of its divisors is an integer number (2229384824).

Almost surely, 2^6688154469 is an apocalyptic number.

It is an amenable number.

6688154469 is a deficient number, since it is larger than the sum of its proper divisors (2229384827).

6688154469 is a wasteful number, since it uses less digits than its factorization.

6688154469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229384826.

The product of its digits is 9953280, while the sum is 57.

The square root of 6688154469 is about 81781.1376113099. The cubic root of 6688154469 is about 1884.0919687593.

The spelling of 6688154469 in words is "six billion, six hundred eighty-eight million, one hundred fifty-four thousand, four hundred sixty-nine".