244689561 has 24 divisors (see below), whose sum is σ = 363111840. Its totient is φ = 158723136.

The previous prime is 244689539. The next prime is 244689583. The reversal of 244689561 is 165986442.

244689561 is a `hidden beast` number, since 2 + 4 + 4 + 6 + 89 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (244689539) and next prime (244689583).

It is not a de Polignac number, because 244689561 - 2¹⁰ = 244688537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (244689061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47605 + ... + 52493.

It is an arithmetic number, because the mean of its divisors is an integer number (15129660).

Almost surely, 2^244689561 is an apocalyptic number.

It is an amenable number.

244689561 is a deficient number, since it is larger than the sum of its proper divisors (118422279).

244689561 is a wasteful number, since it uses less digits than its factorization.

244689561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045 (or 5042 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 244689561 is about 15642.5560890796. The cubic root of 244689561 is about 625.4680747488.

The spelling of 244689561 in words is "two hundred forty-four million, six hundred eighty-nine thousand, five hundred sixty-one".