718412544 has 144 divisors (see below), whose sum is σ = 2217331200. Its totient is φ = 229008384.

The previous prime is 718412543. The next prime is 718412573. The reversal of 718412544 is 445214817.

It is a happy number.

718412544 is a `hidden beast` number, since 71 + 8 + 41 + 2 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×718412544² = 1032233166753103872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 718412499 and 718412508.

It is not an unprimeable number, because it can be changed into a prime (718412543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156717 + ... + 161235.

Almost surely, 2^718412544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718412544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108665600).

718412544 is an abundant number, since it is smaller than the sum of its proper divisors (1498918656).

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

718412544 is a wasteful number, since it uses less digits than its factorization.

718412544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567 (or 4547 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 718412544 is about 26803.2189111681. The cubic root of 718412544 is about 895.6217578664.

The spelling of 718412544 in words is "seven hundred eighteen million, four hundred twelve thousand, five hundred forty-four".