664460343 has 12 divisors (see below), whose sum is σ = 1010290840. Its totient is φ = 419659056.

The previous prime is 664460297. The next prime is 664460347. The reversal of 664460343 is 343064466.

664460343 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 603 + 43 = 666.

It is not a de Polignac number, because 664460343 - 2¹⁴ = 664443959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664460298 and 664460307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664460347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1942696 + ... + 1943037.

Almost surely, 2^664460343 is an apocalyptic number.

664460343 is a deficient number, since it is larger than the sum of its proper divisors (345830497).

664460343 is a wasteful number, since it uses less digits than its factorization.

664460343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885758 (or 3885755 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 664460343 is about 25777.1282923447. The cubic root of 664460343 is about 872.6156990325.

The spelling of 664460343 in words is "six hundred sixty-four million, four hundred sixty thousand, three hundred forty-three".