144561663 has 12 divisors (see below), whose sum is σ = 208923000. Its totient is φ = 96322896.

The previous prime is 144561629. The next prime is 144561689. The reversal of 144561663 is 366165441.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-144561663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144561163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21820 + ... + 27662.

It is an arithmetic number, because the mean of its divisors is an integer number (17410250).

Almost surely, 2^144561663 is an apocalyptic number.

144561663 is a deficient number, since it is larger than the sum of its proper divisors (64361337).

144561663 is a wasteful number, since it uses less digits than its factorization.

144561663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8598 (or 8595 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 144561663 is about 12023.3798492770. The cubic root of 144561663 is about 524.8288639481.

The spelling of 144561663 in words is "one hundred forty-four million, five hundred sixty-one thousand, six hundred sixty-three".