6623905064 has 48 divisors (see below), whose sum is σ = 14553122580. Its totient is φ = 2818072320.

The previous prime is 6623905031. The next prime is 6623905081. The reversal of 6623905064 is 4605093266.

It can be written as a sum of positive squares in 2 ways, for example, as 5828100964 + 795804100 = 76342^2 + 28210^2 .

It is a super-2 number, since 2×6623905064² = 87752236593769688192, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7967 + ... + 115374.

Almost surely, 2^6623905064 is an apocalyptic number.

It is an amenable number.

6623905064 is an abundant number, since it is smaller than the sum of its proper divisors (7929217516).

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

6623905064 is a wasteful number, since it uses less digits than its factorization.

6623905064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123498 (or 123487 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 6623905064 is about 81387.3765641822. The cubic root of 6623905064 is about 1878.0394024161.

The spelling of 6623905064 in words is "six billion, six hundred twenty-three million, nine hundred five thousand, sixty-four".