718779240 has 48 divisors (see below), whose sum is σ = 2336033700. Its totient is φ = 191674368.

The previous prime is 718779211. The next prime is 718779247. The reversal of 718779240 is 42977817.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 654234084 + 64545156 = 25578^2 + 8034^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (718779247) 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 11 ways as a sum of consecutive naturals, for example, 997945 + ... + 998664.

Almost surely, 2^718779240 is an apocalyptic number.

It is an amenable number.

718779240 is an abundant number, since it is smaller than the sum of its proper divisors (1617254460).

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

718779240 is a wasteful number, since it uses less digits than its factorization.

718779240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996626 (or 1996619 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 718779240 is about 26810.0585601748. The cubic root of 718779240 is about 895.7741146408.

The spelling of 718779240 in words is "seven hundred eighteen million, seven hundred seventy-nine thousand, two hundred forty".