6563223654 has 128 divisors (see below), whose sum is σ = 14756152320. Its totient is φ = 1933645824.

The previous prime is 6563223647. The next prime is 6563223671. The reversal of 6563223654 is 4563223656.

It is a super-2 number, since 2×6563223654² = 86151809464850223432, which contains 22 as substring.

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, 47906674 + ... + 47906810.

It is an arithmetic number, because the mean of its divisors is an integer number (115282440).

Almost surely, 2^6563223654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6563223654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7378076160).

6563223654 is an abundant number, since it is smaller than the sum of its proper divisors (8192928666).

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

6563223654 is a wasteful number, since it uses less digits than its factorization.

6563223654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its digits is 777600, while the sum is 42.

The square root of 6563223654 is about 81013.7250964304. The cubic root of 6563223654 is about 1872.2869114493.

The spelling of 6563223654 in words is "six billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred fifty-four".