718918648 has 16 divisors (see below), whose sum is σ = 1540540080. Its totient is φ = 308107968.

The previous prime is 718918609. The next prime is 718918649. The reversal of 718918648 is 846819817.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 718918595 and 718918604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718918649) 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, 6418861 + ... + 6418972.

It is an arithmetic number, because the mean of its divisors is an integer number (96283755).

Almost surely, 2^718918648 is an apocalyptic number.

It is an amenable number.

718918648 is an abundant number, since it is smaller than the sum of its proper divisors (821621432).

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

718918648 is a wasteful number, since it uses less digits than its factorization.

718918648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12837846 (or 12837842 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The square root of 718918648 is about 26812.6583538447. The cubic root of 718918648 is about 895.8320230121.

The spelling of 718918648 in words is "seven hundred eighteen million, nine hundred eighteen thousand, six hundred forty-eight".