718664616 has 64 divisors (see below), whose sum is σ = 2050267200. Its totient is φ = 233077824.

The previous prime is 718664603. The next prime is 718664621. The reversal of 718664616 is 616466817.

718664616 is a `hidden beast` number, since 7 + 186 + 6 + 461 + 6 = 666.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36970 + ... + 52953.

It is an arithmetic number, because the mean of its divisors is an integer number (32035425).

Almost surely, 2^718664616 is an apocalyptic number.

It is an amenable number.

718664616 is an abundant number, since it is smaller than the sum of its proper divisors (1331602584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

718664616 is a wasteful number, since it uses less digits than its factorization.

718664616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89975 (or 89965 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 718664616 is about 26807.9207698023. The cubic root of 718664616 is about 895.7264956294.

The spelling of 718664616 in words is "seven hundred eighteen million, six hundred sixty-four thousand, six hundred sixteen".