664323434 has 4 divisors (see below), whose sum is σ = 996485154. Its totient is φ = 332161716.

The previous prime is 664323409. The next prime is 664323449. The reversal of 664323434 is 434323466.

664323434 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., 483340225 + 180983209 = 21985^2 + 13453^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664323394 and 664323403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166080857 + ... + 166080860.

Almost surely, 2^664323434 is an apocalyptic number.

664323434 is a deficient number, since it is larger than the sum of its proper divisors (332161720).

664323434 is a wasteful number, since it uses less digits than its factorization.

664323434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332161719.

The product of its digits is 124416, while the sum is 35.

The square root of 664323434 is about 25774.4725261255. The cubic root of 664323434 is about 872.5557620976. Note that the first 3 decimals are identical.

The spelling of 664323434 in words is "six hundred sixty-four million, three hundred twenty-three thousand, four hundred thirty-four".