720623622 has 32 divisors (see below), whose sum is σ = 1483476480. Its totient is φ = 233269920.

The previous prime is 720623611. The next prime is 720623653. The reversal of 720623622 is 226326027.

720623622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 720623622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16453 + ... + 41375.

It is an arithmetic number, because the mean of its divisors is an integer number (46358640).

Almost surely, 2^720623622 is an apocalyptic number.

720623622 is an abundant number, since it is smaller than the sum of its proper divisors (762852858).

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

720623622 is a wasteful number, since it uses less digits than its factorization.

720623622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25068.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 720623622 is about 26844.4337247035. The cubic root of 720623622 is about 896.5396433956.

Adding to 720623622 its reverse (226326027), we get a palindrome (946949649).

The spelling of 720623622 in words is "seven hundred twenty million, six hundred twenty-three thousand, six hundred twenty-two".