6689406801 has 32 divisors (see below), whose sum is σ = 11139222528. Its totient is φ = 3469026240.

The previous prime is 6689406797. The next prime is 6689406809. The reversal of 6689406801 is 1086049866.

It is not a de Polignac number, because 6689406801 - 2² = 6689406797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6689406809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110931 + ... + 160263.

It is an arithmetic number, because the mean of its divisors is an integer number (348100704).

Almost surely, 2^6689406801 is an apocalyptic number.

It is an amenable number.

6689406801 is a deficient number, since it is larger than the sum of its proper divisors (4449815727).

6689406801 is a wasteful number, since it uses less digits than its factorization.

6689406801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49941.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 6689406801 is about 81788.7938595502. The cubic root of 6689406801 is about 1884.2095578201.

The spelling of 6689406801 in words is "six billion, six hundred eighty-nine million, four hundred six thousand, eight hundred one".