663794453 has 8 divisors (see below), whose sum is σ = 759974208. Its totient is φ = 567952704.

The previous prime is 663794447. The next prime is 663794477. The reversal of 663794453 is 354497366.

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 663794453 - 2⁶ = 663794389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663794398 and 663794407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663794653) 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, 80276 + ... + 88157.

It is an arithmetic number, because the mean of its divisors is an integer number (94996776).

Almost surely, 2^663794453 is an apocalyptic number.

It is an amenable number.

663794453 is a deficient number, since it is larger than the sum of its proper divisors (96179755).

663794453 is a wasteful number, since it uses less digits than its factorization.

663794453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169003.

The product of its digits is 1632960, while the sum is 47.

The square root of 663794453 is about 25764.2087594399. The cubic root of 663794453 is about 872.3241038618.

The spelling of 663794453 in words is "six hundred sixty-three million, seven hundred ninety-four thousand, four hundred fifty-three".