3654994563 has 16 divisors (see below), whose sum is σ = 5907062400. Its totient is φ = 2215148040.

The previous prime is 3654994559. The next prime is 3654994571.

3654994563 is a `hidden beast` number, since 3 + 6 + 549 + 94 + 5 + 6 + 3 = 666.

3654994563 is nontrivially palindromic in base 10.

3654994563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3654994563 - 2² = 3654994559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3654994573) 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 15 ways as a sum of consecutive naturals, for example, 6152893 + ... + 6153486.

It is an arithmetic number, because the mean of its divisors is an integer number (369191400).

Almost surely, 2^3654994563 is an apocalyptic number.

3654994563 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3654994563 is a deficient number, since it is larger than the sum of its proper divisors (2252067837).

3654994563 is a wasteful number, since it uses less digits than its factorization.

3654994563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12306399 (or 12306393 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 54.

The square root of 3654994563 is about 60456.5510346067. The cubic root of 3654994563 is about 1540.3836907283.

The spelling of 3654994563 in words is "three billion, six hundred fifty-four million, nine hundred ninety-four thousand, five hundred sixty-three".