663458242 has 4 divisors (see below), whose sum is σ = 995187366. Its totient is φ = 331729120.

The previous prime is 663458231. The next prime is 663458273. The reversal of 663458242 is 242854366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 525372241 + 138086001 = 22921^2 + 11751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 663458195 and 663458204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165864559 + ... + 165864562.

Almost surely, 2^663458242 is an apocalyptic number.

663458242 is a deficient number, since it is larger than the sum of its proper divisors (331729124).

663458242 is a wasteful number, since it uses less digits than its factorization.

663458242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331729123.

The product of its digits is 276480, while the sum is 40.

The square root of 663458242 is about 25757.6831644463. The cubic root of 663458242 is about 872.1768019935.

The spelling of 663458242 in words is "six hundred sixty-three million, four hundred fifty-eight thousand, two hundred forty-two".