664026334 has 4 divisors (see below), whose sum is σ = 996039504. Its totient is φ = 332013166.

The previous prime is 664026331. The next prime is 664026361. The reversal of 664026334 is 433620466.

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

It is a self number, because there is not a number n which added to its sum of digits gives 664026334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664026331) 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, 166006582 + ... + 166006585.

It is an arithmetic number, because the mean of its divisors is an integer number (249009876).

Almost surely, 2^664026334 is an apocalyptic number.

664026334 is a deficient number, since it is larger than the sum of its proper divisors (332013170).

664026334 is a wasteful number, since it uses less digits than its factorization.

664026334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332013169.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 664026334 is about 25768.7084270826. The cubic root of 664026334 is about 872.4256673482.

The spelling of 664026334 in words is "six hundred sixty-four million, twenty-six thousand, three hundred thirty-four".