720789298 has 16 divisors (see below), whose sum is σ = 1113975576. Its totient is φ = 349626240.

The previous prime is 720789259. The next prime is 720789323. The reversal of 720789298 is 892987027.

It can be written as a sum of positive squares in 4 ways, for example, as 413593569 + 307195729 = 20337^2 + 17527^2 .

It is a super-2 number, since 2×720789298² = 1039074424222665608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31561 + ... + 49372.

Almost surely, 2^720789298 is an apocalyptic number.

720789298 is a deficient number, since it is larger than the sum of its proper divisors (393186278).

720789298 is a wasteful number, since it uses less digits than its factorization.

720789298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81069.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 720789298 is about 26847.5194012408. The cubic root of 720789298 is about 896.6083448721.

The spelling of 720789298 in words is "seven hundred twenty million, seven hundred eighty-nine thousand, two hundred ninety-eight".