718720434 has 24 divisors (see below), whose sum is σ = 1557765612. Its totient is φ = 239490720.

The previous prime is 718720417. The next prime is 718720459. The reversal of 718720434 is 434027817.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 671069025 + 47651409 = 25905^2 + 6903^2 .

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 11 ways as a sum of consecutive naturals, for example, 69564 + ... + 79224.

Almost surely, 2^718720434 is an apocalyptic number.

718720434 is an abundant number, since it is smaller than the sum of its proper divisors (839045178).

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

718720434 is a wasteful number, since it uses less digits than its factorization.

718720434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13802 (or 13799 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 718720434 is about 26808.9618224951. The cubic root of 718720434 is about 895.7496851052.

The spelling of 718720434 in words is "seven hundred eighteen million, seven hundred twenty thousand, four hundred thirty-four".