663210434 has 4 divisors (see below), whose sum is σ = 994815654. Its totient is φ = 331605216.

The previous prime is 663210433. The next prime is 663210461. The reversal of 663210434 is 434012366.

663210434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 475109209 + 188101225 = 21797^2 + 13715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 663210397 and 663210406.

It is not an unprimeable number, because it can be changed into a prime (663210433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165802607 + ... + 165802610.

Almost surely, 2^663210434 is an apocalyptic number.

663210434 is a deficient number, since it is larger than the sum of its proper divisors (331605220).

663210434 is a wasteful number, since it uses less digits than its factorization.

663210434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331605219.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 663210434 is about 25752.8723446531. The cubic root of 663210434 is about 872.0681996781.

The spelling of 663210434 in words is "six hundred sixty-three million, two hundred ten thousand, four hundred thirty-four".