6923664405 has 64 divisors (see below), whose sum is σ = 14447393280. Its totient is φ = 3079544832.

The previous prime is 6923664379. The next prime is 6923664427. The reversal of 6923664405 is 5044663296.

6923664405 is a `hidden beast` number, since 6 + 9 + 236 + 6 + 4 + 405 = 666.

6923664405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6923664405 - 2³² = 2628697109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64044 + ... + 133973.

It is an arithmetic number, because the mean of its divisors is an integer number (225740520).

Almost surely, 2^6923664405 is an apocalyptic number.

It is an amenable number.

6923664405 is an abundant number, since it is smaller than the sum of its proper divisors (7523728875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6923664405 is a wasteful number, since it uses less digits than its factorization.

6923664405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198075 (or 198069 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 6923664405 is about 83208.5596858881. The cubic root of 6923664405 is about 1905.9521930829.

The spelling of 6923664405 in words is "six billion, nine hundred twenty-three million, six hundred sixty-four thousand, four hundred five".