6623558403 has 32 divisors (see below), whose sum is σ = 11590103040. Its totient is φ = 3259712160.

The previous prime is 6623558371. The next prime is 6623558467. The reversal of 6623558403 is 3048553266.

It is not a de Polignac number, because 6623558403 - 2⁵ = 6623558371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6623558483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 750175 + ... + 758952.

It is an arithmetic number, because the mean of its divisors is an integer number (362190720).

Almost surely, 2^6623558403 is an apocalyptic number.

6623558403 is a deficient number, since it is larger than the sum of its proper divisors (4966544637).

6623558403 is a wasteful number, since it uses less digits than its factorization.

6623558403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509167.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 6623558403 is about 81385.2468387238. The cubic root of 6623558403 is about 1878.0066395485.

The spelling of 6623558403 in words is "six billion, six hundred twenty-three million, five hundred fifty-eight thousand, four hundred three".