664306043 has 8 divisors (see below), whose sum is σ = 675618960. Its totient is φ = 653006880.

The previous prime is 664306039. The next prime is 664306051. The reversal of 664306043 is 340603466.

664306043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664306043 - 2² = 664306039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664306003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153848 + ... + 158106.

It is an arithmetic number, because the mean of its divisors is an integer number (84452370).

Almost surely, 2^664306043 is an apocalyptic number.

664306043 is a deficient number, since it is larger than the sum of its proper divisors (11312917).

664306043 is a wasteful number, since it uses less digits than its factorization.

664306043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 664306043 is about 25774.1351552288. The cubic root of 664306043 is about 872.5481479602.

The spelling of 664306043 in words is "six hundred sixty-four million, three hundred six thousand, forty-three".