720564434 has 8 divisors (see below), whose sum is σ = 1115712768. Its totient is φ = 348660180.

The previous prime is 720564433. The next prime is 720564437. The reversal of 720564434 is 434465027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 720564394 and 720564403.

It is not an unprimeable number, because it can be changed into a prime (720564433) 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, 5810942 + ... + 5811065.

It is an arithmetic number, because the mean of its divisors is an integer number (139464096).

Almost surely, 2^720564434 is an apocalyptic number.

720564434 is a deficient number, since it is larger than the sum of its proper divisors (395148334).

720564434 is a wasteful number, since it uses less digits than its factorization.

720564434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11622040.

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 720564434 is about 26843.3312761289. The cubic root of 720564434 is about 896.5150971371.

The spelling of 720564434 in words is "seven hundred twenty million, five hundred sixty-four thousand, four hundred thirty-four".