663633045 has 24 divisors (see below), whose sum is σ = 1210840800. Its totient is φ = 335308896.

The previous prime is 663633043. The next prime is 663633077. The reversal of 663633045 is 540336366.

It is a happy number.

It is not a de Polignac number, because 663633045 - 2¹ = 663633043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663633043) 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, 387235 + ... + 388944.

It is an arithmetic number, because the mean of its divisors is an integer number (50451700).

Almost surely, 2^663633045 is an apocalyptic number.

It is an amenable number.

663633045 is a deficient number, since it is larger than the sum of its proper divisors (547207755).

663633045 is a wasteful number, since it uses less digits than its factorization.

663633045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776209 (or 776206 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

The square root of 663633045 is about 25761.0761615271. The cubic root of 663633045 is about 872.2533934674.

The spelling of 663633045 in words is "six hundred sixty-three million, six hundred thirty-three thousand, forty-five".