720521950 has 24 divisors (see below), whose sum is σ = 1352705832. Its totient is φ = 285513120.

The previous prime is 720521941. The next prime is 720521951. The reversal of 720521950 is 59125027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720521951) by changing a digit.

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, 61989 + ... + 72688.

It is an arithmetic number, because the mean of its divisors is an integer number (56362743).

Almost surely, 2^720521950 is an apocalyptic number.

720521950 is a deficient number, since it is larger than the sum of its proper divisors (632183882).

720521950 is a wasteful number, since it uses less digits than its factorization.

720521950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134796 (or 134791 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 720521950 is about 26842.5399319811. The cubic root of 720521950 is about 896.4974774794.

Adding to 720521950 its reverse (59125027), we get a palindrome (779646977).

The spelling of 720521950 in words is "seven hundred twenty million, five hundred twenty-one thousand, nine hundred fifty".