6623559854 has 4 divisors (see below), whose sum is σ = 9935339784. Its totient is φ = 3311779926.

The previous prime is 6623559853. The next prime is 6623559973. The reversal of 6623559854 is 4589553266.

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

It is a junction number, because it is equal to n+sod(n) for n = 6623559796 and 6623559805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6623559853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655889962 + ... + 1655889965.

It is an arithmetic number, because the mean of its divisors is an integer number (2483834946).

Almost surely, 2^6623559854 is an apocalyptic number.

6623559854 is a deficient number, since it is larger than the sum of its proper divisors (3311779930).

6623559854 is a wasteful number, since it uses less digits than its factorization.

6623559854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311779929.

The product of its digits is 7776000, while the sum is 53.

The square root of 6623559854 is about 81385.2557531154. The cubic root of 6623559854 is about 1878.0067766846.

The spelling of 6623559854 in words is "six billion, six hundred twenty-three million, five hundred fifty-nine thousand, eight hundred fifty-four".