663461589 has 32 divisors (see below), whose sum is σ = 1072660480. Its totient is φ = 356311872.

The previous prime is 663461581. The next prime is 663461599. The reversal of 663461589 is 985164366.

It is not a de Polignac number, because 663461589 - 2³ = 663461581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663461581) 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, 44127 + ... + 57219.

It is an arithmetic number, because the mean of its divisors is an integer number (33520640).

Almost surely, 2^663461589 is an apocalyptic number.

It is an amenable number.

663461589 is a deficient number, since it is larger than the sum of its proper divisors (409198891).

663461589 is a wasteful number, since it uses less digits than its factorization.

663461589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249.

The product of its digits is 933120, while the sum is 48.

The square root of 663461589 is about 25757.7481352699. The cubic root of 663461589 is about 872.1782686373.

The spelling of 663461589 in words is "six hundred sixty-three million, four hundred sixty-one thousand, five hundred eighty-nine".