663351447 has 8 divisors (see below), whose sum is σ = 964874880. Its totient is φ = 402031160.

The previous prime is 663351433. The next prime is 663351449. The reversal of 663351447 is 744153366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663351447 - 2⁶ = 663351383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663351449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10050747 + ... + 10050812.

It is an arithmetic number, because the mean of its divisors is an integer number (120609360).

Almost surely, 2^663351447 is an apocalyptic number.

663351447 is a deficient number, since it is larger than the sum of its proper divisors (301523433).

663351447 is a wasteful number, since it uses less digits than its factorization.

663351447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101573.

The product of its digits is 181440, while the sum is 39.

The square root of 663351447 is about 25755.6100102483. The cubic root of 663351447 is about 872.1300022032.

The spelling of 663351447 in words is "six hundred sixty-three million, three hundred fifty-one thousand, four hundred forty-seven".