663553433 has 8 divisors (see below), whose sum is σ = 676103616. Its totient is φ = 651092400.

The previous prime is 663553417. The next prime is 663553447. The reversal of 663553433 is 334355366.

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 663553433 - 2⁴ = 663553417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663553403) 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, 7166 + ... + 37127.

It is an arithmetic number, because the mean of its divisors is an integer number (84512952).

Almost surely, 2^663553433 is an apocalyptic number.

It is an amenable number.

663553433 is a deficient number, since it is larger than the sum of its proper divisors (12550183).

663553433 is a wasteful number, since it uses less digits than its factorization.

663553433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44575.

The product of its digits is 291600, while the sum is 38.

The square root of 663553433 is about 25759.5309157601. The cubic root of 663553433 is about 872.2185124365.

The spelling of 663553433 in words is "six hundred sixty-three million, five hundred fifty-three thousand, four hundred thirty-three".