720553670 has 16 divisors (see below), whose sum is σ = 1373290848. Its totient is φ = 271267200.

The previous prime is 720553657. The next prime is 720553679. The reversal of 720553670 is 76355027.

It is a self number, because there is not a number n which added to its sum of digits gives 720553670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720553679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2119106 + ... + 2119445.

It is an arithmetic number, because the mean of its divisors is an integer number (85830678).

Almost surely, 2^720553670 is an apocalyptic number.

720553670 is a deficient number, since it is larger than the sum of its proper divisors (652737178).

720553670 is a wasteful number, since it uses less digits than its factorization.

720553670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238575.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 720553670 is about 26843.1307786555. The cubic root of 720553670 is about 896.5106329809.

The spelling of 720553670 in words is "seven hundred twenty million, five hundred fifty-three thousand, six hundred seventy".