663039249 has 16 divisors (see below), whose sum is σ = 908578944. Its totient is φ = 429833600.

The previous prime is 663039241. The next prime is 663039263. The reversal of 663039249 is 942930366.

It is a cyclic number.

It is not a de Polignac number, because 663039249 - 2³ = 663039241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663039249.

It is not an unprimeable number, because it can be changed into a prime (663039241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29587 + ... + 46919.

It is an arithmetic number, because the mean of its divisors is an integer number (56786184).

Almost surely, 2^663039249 is an apocalyptic number.

It is an amenable number.

663039249 is a deficient number, since it is larger than the sum of its proper divisors (245539695).

663039249 is a wasteful number, since it uses less digits than its factorization.

663039249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17688.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 663039249 is about 25749.5485203139. The cubic root of 663039249 is about 871.9931617348.

The spelling of 663039249 in words is "six hundred sixty-three million, thirty-nine thousand, two hundred forty-nine".