664107434 has 4 divisors (see below), whose sum is σ = 996161154. Its totient is φ = 332053716.

The previous prime is 664107407. The next prime is 664107439. The reversal of 664107434 is 434701466.

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., 652649209 + 11458225 = 25547^2 + 3385^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664107394 and 664107403.

It is not an unprimeable number, because it can be changed into a prime (664107439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166026857 + ... + 166026860.

Almost surely, 2^664107434 is an apocalyptic number.

664107434 is a deficient number, since it is larger than the sum of its proper divisors (332053720).

664107434 is a wasteful number, since it uses less digits than its factorization.

664107434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332053719.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 664107434 is about 25770.2819930244. The cubic root of 664107434 is about 872.4611834303.

The spelling of 664107434 in words is "six hundred sixty-four million, one hundred seven thousand, four hundred thirty-four".