6354661563 has 12 divisors (see below), whose sum is σ = 9179811888. Its totient is φ = 4236045840.

The previous prime is 6354661553. The next prime is 6354661589. The reversal of 6354661563 is 3651664536.

6354661563 is a `hidden beast` number, since 6 + 35 + 466 + 156 + 3 = 666.

It is not a de Polignac number, because 6354661563 - 2⁵ = 6354661531 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6354661553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95098 + ... + 147488.

It is an arithmetic number, because the mean of its divisors is an integer number (764984324).

Almost surely, 2^6354661563 is an apocalyptic number.

6354661563 is a deficient number, since it is larger than the sum of its proper divisors (2825150325).

6354661563 is a wasteful number, since it uses less digits than its factorization.

6354661563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65874 (or 65871 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 6354661563 is about 79716.1311341688. The cubic root of 6354661563 is about 1852.2409234090.

The spelling of 6354661563 in words is "six billion, three hundred fifty-four million, six hundred sixty-one thousand, five hundred sixty-three".