664302343 has 4 divisors (see below), whose sum is σ = 664488928. Its totient is φ = 664115760.

The previous prime is 664302337. The next prime is 664302361. The reversal of 664302343 is 343203466.

664302343 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, and also an emirpimes, since its reverse is a distinct semiprime: 343203466 = 2 ⋅171601733.

It is a cyclic number.

It is not a de Polignac number, because 664302343 - 2¹³ = 664294151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664302323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87846 + ... + 95107.

It is an arithmetic number, because the mean of its divisors is an integer number (166122232).

Almost surely, 2^664302343 is an apocalyptic number.

664302343 is a deficient number, since it is larger than the sum of its proper divisors (186585).

664302343 is a wasteful number, since it uses less digits than its factorization.

664302343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186584.

The product of its (nonzero) digits is 31104, while the sum is 31.

The square root of 664302343 is about 25774.0633777447. The cubic root of 664302343 is about 872.5465280070.

The spelling of 664302343 in words is "six hundred sixty-four million, three hundred two thousand, three hundred forty-three".