103644563 has 32 divisors (see below), whose sum is σ = 130222080. Its totient is φ = 81216000.

The previous prime is 103644559. The next prime is 103644581. The reversal of 103644563 is 365446301.

It is a cyclic number.

It is not a de Polignac number, because 103644563 - 2² = 103644559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103644523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109673 + ... + 110613.

It is an arithmetic number, because the mean of its divisors is an integer number (4069440).

Almost surely, 2^103644563 is an apocalyptic number.

103644563 is a deficient number, since it is larger than the sum of its proper divisors (26577517).

103644563 is a wasteful number, since it uses less digits than its factorization.

103644563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 103644563 is about 10180.5973793290. The cubic root of 103644563 is about 469.7305880154.

The spelling of 103644563 in words is "one hundred three million, six hundred forty-four thousand, five hundred sixty-three".