664673714 has 16 divisors (see below), whose sum is σ = 1025158680. Its totient is φ = 323015040.

The previous prime is 664673699. The next prime is 664673717. The reversal of 664673714 is 417376466.

It can be written as a sum of positive squares in 4 ways, for example, as 172055689 + 492618025 = 13117^2 + 22195^2 .

It is a super-2 number, since 2×664673714² = 883582292165107592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664673717) 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 in 7 ways as a sum of consecutive naturals, for example, 6992 + ... + 37124.

Almost surely, 2^664673714 is an apocalyptic number.

664673714 is a deficient number, since it is larger than the sum of its proper divisors (360484966).

664673714 is a wasteful number, since it uses less digits than its factorization.

664673714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445.

The product of its digits is 508032, while the sum is 44.

The square root of 664673714 is about 25781.2667260552. The cubic root of 664673714 is about 872.7090935995.

The spelling of 664673714 in words is "six hundred sixty-four million, six hundred seventy-three thousand, seven hundred fourteen".