720778350 has 24 divisors (see below), whose sum is σ = 1787530680. Its totient is φ = 192207520.

The previous prime is 720778343. The next prime is 720778361. The reversal of 720778350 is 53877027.

It is a junction number, because it is equal to n+sod(n) for n = 720778299 and 720778308.

It is a congruent number.

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, 2402445 + ... + 2402744.

It is an arithmetic number, because the mean of its divisors is an integer number (74480445).

Almost surely, 2^720778350 is an apocalyptic number.

720778350 is an abundant number, since it is smaller than the sum of its proper divisors (1066752330).

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

720778350 is a wasteful number, since it uses less digits than its factorization.

720778350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805204 (or 4805199 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 720778350 is about 26847.3155082589. The cubic root of 720778350 is about 896.6038053495.

The spelling of 720778350 in words is "seven hundred twenty million, seven hundred seventy-eight thousand, three hundred fifty".