718664546 has 8 divisors (see below), whose sum is σ = 1095669084. Its totient is φ = 353441520.

The previous prime is 718664539. The next prime is 718664549. The reversal of 718664546 is 645466817.

It can be written as a sum of positive squares in 2 ways, for example, as 589955521 + 128709025 = 24289^2 + 11345^2 .

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

It is a super-2 number, since 2×718664546² = 1032957459354772232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 718664546.

It is not an unprimeable number, because it can be changed into a prime (718664549) 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 3 ways as a sum of consecutive naturals, for example, 2945225 + ... + 2945468.

Almost surely, 2^718664546 is an apocalyptic number.

718664546 is a deficient number, since it is larger than the sum of its proper divisors (377004538).

718664546 is a wasteful number, since it uses less digits than its factorization.

718664546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890756.

The product of its digits is 967680, while the sum is 47.

The square root of 718664546 is about 26807.9194642180. The cubic root of 718664546 is about 895.7264665473.

The spelling of 718664546 in words is "seven hundred eighteen million, six hundred sixty-four thousand, five hundred forty-six".