244661563 has 4 divisors (see below), whose sum is σ = 246588160. Its totient is φ = 242734968.

The previous prime is 244661519. The next prime is 244661567. The reversal of 244661563 is 365166442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365166442 = 2 ⋅182583221.

It is a cyclic number.

It is not a de Polignac number, because 244661563 - 2²⁵ = 211107131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244661567) 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 3 ways as a sum of consecutive naturals, for example, 963108 + ... + 963361.

It is an arithmetic number, because the mean of its divisors is an integer number (61647040).

Almost surely, 2^244661563 is an apocalyptic number.

244661563 is a deficient number, since it is larger than the sum of its proper divisors (1926597).

244661563 is a wasteful number, since it uses less digits than its factorization.

244661563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926596.

The product of its digits is 103680, while the sum is 37.

The square root of 244661563 is about 15641.6611330127. The cubic root of 244661563 is about 625.4442179578. Note that the first 3 decimals are identical.

It can be divided in two parts, 2446 and 61563, that added together give a square (64009 = 253²).

The spelling of 244661563 in words is "two hundred forty-four million, six hundred sixty-one thousand, five hundred sixty-three".