722064650 has 12 divisors (see below), whose sum is σ = 1343040342. Its totient is φ = 288825840.

The previous prime is 722064641. The next prime is 722064667. The reversal of 722064650 is 56460227.

It can be written as a sum of positive squares in 3 ways, for example, as 537729721 + 184334929 = 23189^2 + 13577^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7220597 + ... + 7220696.

Almost surely, 2^722064650 is an apocalyptic number.

722064650 is a deficient number, since it is larger than the sum of its proper divisors (620975692).

722064650 is a wasteful number, since it uses less digits than its factorization.

722064650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441305 (or 14441300 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 722064650 is about 26871.2606700914. The cubic root of 722064650 is about 897.1368476707.

The spelling of 722064650 in words is "seven hundred twenty-two million, sixty-four thousand, six hundred fifty".